Merge tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - videobuf2 was moved to a media/common dir, as it is now used by the
   DVB subsystem too

 - Digital TV core memory mapped support interface

 - new sensor driver: ov7740

 - several improvements at ddbridge driver

 - new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel
   SoCs

 - new tuner driver: tda18250

 - finally got rid of all LIRC staging drivers

 - as we don't have old lirc drivers anymore, restruct the lirc device
   code

 - add support for UVC metadata

 - add a new staging driver for NVIDIA Tegra Video Decoder Engine

 - DVB kAPI headers moved to include/media

 - synchronize the kAPI and uAPI for the DVB subsystem, removing the gap
   for non-legacy APIs

 - reduce the kAPI gap for V4L2

 - lots of other driver enhancements, cleanups, etc.

* tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits)
  media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
  media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
  media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
  media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
  media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
  media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
  media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
  media: v4l2-compat-ioctl32.c: avoid sizeof(type)
  media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
  media: v4l2-compat-ioctl32.c: fix the indentation
  media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
  media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
  media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt
  media: vivid: fix module load error when enabling fb and no_error_inj=1
  media: dvb_demux: improve debug messages
  media: dvb_demux: Better handle discontinuity errors
  media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
  media: ts2020: avoid integer overflows on 32 bit machines
  media: i2c: ov7740: use gpio/consumer.h instead of gpio.h
  media: entity: Add a nop variant of media_entity_cleanup
  ...

48 files changed, 4937 insertions, 1124 deletions

diff --git a/include/media/cec.h b/include/media/cec.h
index 16341210d3ba..7cdf71d7125a 100644
--- a/include/media/cec.h
+++ b/include/media/cec.h
@@ -122,6 +122,7 @@ struct cec_adap_ops {
 	/* Low-level callbacks */
 	int (*adap_enable)(struct cec_adapter *adap, bool enable);
 	int (*adap_monitor_all_enable)(struct cec_adapter *adap, bool enable);
+	int (*adap_monitor_pin_enable)(struct cec_adapter *adap, bool enable);
 	int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr);
 	int (*adap_transmit)(struct cec_adapter *adap, u8 attempts,
 			     u32 signal_free_time, struct cec_msg *msg);
@@ -191,11 +192,6 @@ struct cec_adapter {
 
 	u32 tx_timeouts;
 
-#ifdef CONFIG_MEDIA_CEC_RC
-	bool rc_repeating;
-	int rc_last_scancode;
-	u64 rc_last_keypress;
-#endif
 #ifdef CONFIG_CEC_NOTIFIER
 	struct cec_notifier *notifier;
 #endif
@@ -229,6 +225,18 @@ static inline bool cec_is_sink(const struct cec_adapter *adap)
 	return adap->phys_addr == 0;
 }
 
+/**
+ * cec_is_registered() - is the CEC adapter registered?
+ *
+ * @adap:	the CEC adapter, may be NULL.
+ *
+ * Return: true if the adapter is registered, false otherwise.
+ */
+static inline bool cec_is_registered(const struct cec_adapter *adap)
+{
+	return adap && adap->devnode.registered;
+}
+
 #define cec_phys_addr_exp(pa) \
 	((pa) >> 12), ((pa) >> 8) & 0xf, ((pa) >> 4) & 0xf, (pa) & 0xf
 
diff --git a/include/media/demux.h b/include/media/demux.h
new file mode 100644
index 000000000000..c4df6cee48e6
--- /dev/null
+++ b/include/media/demux.h
@@ -0,0 +1,589 @@
+/*
+ * demux.h
+ *
+ * The Kernel Digital TV Demux kABI defines a driver-internal interface for
+ * registering low-level, hardware specific driver to a hardware independent
+ * demux layer.
+ *
+ * Copyright (c) 2002 Convergence GmbH
+ *
+ * based on code:
+ * Copyright (c) 2000 Nokia Research Center
+ *                    Tampere, FINLAND
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __DEMUX_H
+#define __DEMUX_H
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/time.h>
+#include <linux/dvb/dmx.h>
+
+/*
+ * Common definitions
+ */
+
+/*
+ * DMX_MAX_FILTER_SIZE: Maximum length (in bytes) of a section/PES filter.
+ */
+
+#ifndef DMX_MAX_FILTER_SIZE
+#define DMX_MAX_FILTER_SIZE 18
+#endif
+
+/*
+ * DMX_MAX_SECFEED_SIZE: Maximum length (in bytes) of a private section feed
+ * filter.
+ */
+
+#ifndef DMX_MAX_SECTION_SIZE
+#define DMX_MAX_SECTION_SIZE 4096
+#endif
+#ifndef DMX_MAX_SECFEED_SIZE
+#define DMX_MAX_SECFEED_SIZE (DMX_MAX_SECTION_SIZE + 188)
+#endif
+
+/*
+ * TS packet reception
+ */
+
+/**
+ * enum ts_filter_type - filter type bitmap for dmx_ts_feed.set\(\)
+ *
+ * @TS_PACKET:		Send TS packets (188 bytes) to callback (default).
+ * @TS_PAYLOAD_ONLY:	In case TS_PACKET is set, only send the TS payload
+ *			(<=184 bytes per packet) to callback
+ * @TS_DECODER:		Send stream to built-in decoder (if present).
+ * @TS_DEMUX:		In case TS_PACKET is set, send the TS to the demux
+ *			device, not to the dvr device
+ */
+enum ts_filter_type {
+	TS_PACKET = 1,
+	TS_PAYLOAD_ONLY = 2,
+	TS_DECODER = 4,
+	TS_DEMUX = 8,
+};
+
+/**
+ * struct dmx_ts_feed - Structure that contains a TS feed filter
+ *
+ * @is_filtering:	Set to non-zero when filtering in progress
+ * @parent:		pointer to struct dmx_demux
+ * @priv:		pointer to private data of the API client
+ * @set:		sets the TS filter
+ * @start_filtering:	starts TS filtering
+ * @stop_filtering:	stops TS filtering
+ *
+ * A TS feed is typically mapped to a hardware PID filter on the demux chip.
+ * Using this API, the client can set the filtering properties to start/stop
+ * filtering TS packets on a particular TS feed.
+ */
+struct dmx_ts_feed {
+	int is_filtering;
+	struct dmx_demux *parent;
+	void *priv;
+	int (*set)(struct dmx_ts_feed *feed,
+		   u16 pid,
+		   int type,
+		   enum dmx_ts_pes pes_type,
+		   ktime_t timeout);
+	int (*start_filtering)(struct dmx_ts_feed *feed);
+	int (*stop_filtering)(struct dmx_ts_feed *feed);
+};
+
+/*
+ * Section reception
+ */
+
+/**
+ * struct dmx_section_filter - Structure that describes a section filter
+ *
+ * @filter_value: Contains up to 16 bytes (128 bits) of the TS section header
+ *		  that will be matched by the section filter
+ * @filter_mask:  Contains a 16 bytes (128 bits) filter mask with the bits
+ *		  specified by @filter_value that will be used on the filter
+ *		  match logic.
+ * @filter_mode:  Contains a 16 bytes (128 bits) filter mode.
+ * @parent:	  Pointer to struct dmx_section_feed.
+ * @priv:	  Pointer to private data of the API client.
+ *
+ *
+ * The @filter_mask controls which bits of @filter_value are compared with
+ * the section headers/payload. On a binary value of 1 in filter_mask, the
+ * corresponding bits are compared. The filter only accepts sections that are
+ * equal to filter_value in all the tested bit positions.
+ */
+struct dmx_section_filter {
+	u8 filter_value[DMX_MAX_FILTER_SIZE];
+	u8 filter_mask[DMX_MAX_FILTER_SIZE];
+	u8 filter_mode[DMX_MAX_FILTER_SIZE];
+	struct dmx_section_feed *parent; /* Back-pointer */
+	void *priv; /* Pointer to private data of the API client */
+};
+
+/**
+ * struct dmx_section_feed - Structure that contains a section feed filter
+ *
+ * @is_filtering:	Set to non-zero when filtering in progress
+ * @parent:		pointer to struct dmx_demux
+ * @priv:		pointer to private data of the API client
+ * @check_crc:		If non-zero, check the CRC values of filtered sections.
+ * @set:		sets the section filter
+ * @allocate_filter:	This function is used to allocate a section filter on
+ *			the demux. It should only be called when no filtering
+ *			is in progress on this section feed. If a filter cannot
+ *			be allocated, the function fails with -ENOSPC.
+ * @release_filter:	This function releases all the resources of a
+ *			previously allocated section filter. The function
+ *			should not be called while filtering is in progress
+ *			on this section feed. After calling this function,
+ *			the caller should not try to dereference the filter
+ *			pointer.
+ * @start_filtering:	starts section filtering
+ * @stop_filtering:	stops section filtering
+ *
+ * A TS feed is typically mapped to a hardware PID filter on the demux chip.
+ * Using this API, the client can set the filtering properties to start/stop
+ * filtering TS packets on a particular TS feed.
+ */
+struct dmx_section_feed {
+	int is_filtering;
+	struct dmx_demux *parent;
+	void *priv;
+
+	int check_crc;
+
+	/* private: Used internally at dvb_demux.c */
+	u32 crc_val;
+
+	u8 *secbuf;
+	u8 secbuf_base[DMX_MAX_SECFEED_SIZE];
+	u16 secbufp, seclen, tsfeedp;
+
+	/* public: */
+	int (*set)(struct dmx_section_feed *feed,
+		   u16 pid,
+		   int check_crc);
+	int (*allocate_filter)(struct dmx_section_feed *feed,
+			       struct dmx_section_filter **filter);
+	int (*release_filter)(struct dmx_section_feed *feed,
+			      struct dmx_section_filter *filter);
+	int (*start_filtering)(struct dmx_section_feed *feed);
+	int (*stop_filtering)(struct dmx_section_feed *feed);
+};
+
+/**
+ * typedef dmx_ts_cb - DVB demux TS filter callback function prototype
+ *
+ * @buffer1:		Pointer to the start of the filtered TS packets.
+ * @buffer1_length:	Length of the TS data in buffer1.
+ * @buffer2:		Pointer to the tail of the filtered TS packets, or NULL.
+ * @buffer2_length:	Length of the TS data in buffer2.
+ * @source:		Indicates which TS feed is the source of the callback.
+ *
+ * This function callback prototype, provided by the client of the demux API,
+ * is called from the demux code. The function is only called when filtering
+ * on a TS feed has been enabled using the start_filtering\(\) function at
+ * the &dmx_demux.
+ * Any TS packets that match the filter settings are copied to a circular
+ * buffer. The filtered TS packets are delivered to the client using this
+ * callback function.
+ * It is expected that the @buffer1 and @buffer2 callback parameters point to
+ * addresses within the circular buffer, but other implementations are also
+ * possible. Note that the called party should not try to free the memory
+ * the @buffer1 and @buffer2 parameters point to.
+ *
+ * When this function is called, the @buffer1 parameter typically points to
+ * the start of the first undelivered TS packet within a circular buffer.
+ * The @buffer2 buffer parameter is normally NULL, except when the received
+ * TS packets have crossed the last address of the circular buffer and
+ * "wrapped" to the beginning of the buffer. In the latter case the @buffer1
+ * parameter would contain an address within the circular buffer, while the
+ * @buffer2 parameter would contain the first address of the circular buffer.
+ * The number of bytes delivered with this function (i.e. @buffer1_length +
+ * @buffer2_length) is usually equal to the value of callback_length parameter
+ * given in the set() function, with one exception: if a timeout occurs before
+ * receiving callback_length bytes of TS data, any undelivered packets are
+ * immediately delivered to the client by calling this function. The timeout
+ * duration is controlled by the set() function in the TS Feed API.
+ *
+ * If a TS packet is received with errors that could not be fixed by the
+ * TS-level forward error correction (FEC), the Transport_error_indicator
+ * flag of the TS packet header should be set. The TS packet should not be
+ * discarded, as the error can possibly be corrected by a higher layer
+ * protocol. If the called party is slow in processing the callback, it
+ * is possible that the circular buffer eventually fills up. If this happens,
+ * the demux driver should discard any TS packets received while the buffer
+ * is full and return -EOVERFLOW.
+ *
+ * The type of data returned to the callback can be selected by the
+ * &dmx_ts_feed.@set function. The type parameter decides if the raw
+ * TS packet (TS_PACKET) or just the payload (TS_PACKET|TS_PAYLOAD_ONLY)
+ * should be returned. If additionally the TS_DECODER bit is set the stream
+ * will also be sent to the hardware MPEG decoder.
+ *
+ * Return:
+ *
+ * - 0, on success;
+ *
+ * - -EOVERFLOW, on buffer overflow.
+ */
+typedef int (*dmx_ts_cb)(const u8 *buffer1,
+			 size_t buffer1_length,
+			 const u8 *buffer2,
+			 size_t buffer2_length,
+			 struct dmx_ts_feed *source);
+
+/**
+ * typedef dmx_section_cb - DVB demux TS filter callback function prototype
+ *
+ * @buffer1:		Pointer to the start of the filtered section, e.g.
+ *			within the circular buffer of the demux driver.
+ * @buffer1_len:	Length of the filtered section data in @buffer1,
+ *			including headers and CRC.
+ * @buffer2:		Pointer to the tail of the filtered section data,
+ *			or NULL. Useful to handle the wrapping of a
+ *			circular buffer.
+ * @buffer2_len:	Length of the filtered section data in @buffer2,
+ *			including headers and CRC.
+ * @source:		Indicates which section feed is the source of the
+ *			callback.
+ *
+ * This function callback prototype, provided by the client of the demux API,
+ * is called from the demux code. The function is only called when
+ * filtering of sections has been enabled using the function
+ * &dmx_ts_feed.@start_filtering. When the demux driver has received a
+ * complete section that matches at least one section filter, the client
+ * is notified via this callback function. Normally this function is called
+ * for each received section; however, it is also possible to deliver
+ * multiple sections with one callback, for example when the system load
+ * is high. If an error occurs while receiving a section, this
+ * function should be called with the corresponding error type set in the
+ * success field, whether or not there is data to deliver. The Section Feed
+ * implementation should maintain a circular buffer for received sections.
+ * However, this is not necessary if the Section Feed API is implemented as
+ * a client of the TS Feed API, because the TS Feed implementation then
+ * buffers the received data. The size of the circular buffer can be
+ * configured using the &dmx_ts_feed.@set function in the Section Feed API.
+ * If there is no room in the circular buffer when a new section is received,
+ * the section must be discarded. If this happens, the value of the success
+ * parameter should be DMX_OVERRUN_ERROR on the next callback.
+ */
+typedef int (*dmx_section_cb)(const u8 *buffer1,
+			      size_t buffer1_len,
+			      const u8 *buffer2,
+			      size_t buffer2_len,
+			      struct dmx_section_filter *source);
+
+/*
+ * DVB Front-End
+ */
+
+/**
+ * enum dmx_frontend_source - Used to identify the type of frontend
+ *
+ * @DMX_MEMORY_FE:	The source of the demux is memory. It means that
+ *			the MPEG-TS to be filtered comes from userspace,
+ *			via write() syscall.
+ *
+ * @DMX_FRONTEND_0:	The source of the demux is a frontend connected
+ *			to the demux.
+ */
+enum dmx_frontend_source {
+	DMX_MEMORY_FE,
+	DMX_FRONTEND_0,
+};
+
+/**
+ * struct dmx_frontend - Structure that lists the frontends associated with
+ *			 a demux
+ *
+ * @connectivity_list:	List of front-ends that can be connected to a
+ *			particular demux;
+ * @source:		Type of the frontend.
+ *
+ * FIXME: this structure should likely be replaced soon by some
+ *	media-controller based logic.
+ */
+struct dmx_frontend {
+	struct list_head connectivity_list;
+	enum dmx_frontend_source source;
+};
+
+/*
+ * MPEG-2 TS Demux
+ */
+
+/**
+ * enum dmx_demux_caps - MPEG-2 TS Demux capabilities bitmap
+ *
+ * @DMX_TS_FILTERING:		set if TS filtering is supported;
+ * @DMX_SECTION_FILTERING:	set if section filtering is supported;
+ * @DMX_MEMORY_BASED_FILTERING:	set if write() available.
+ *
+ * Those flags are OR'ed in the &dmx_demux.capabilities field
+ */
+enum dmx_demux_caps {
+	DMX_TS_FILTERING = 1,
+	DMX_SECTION_FILTERING = 4,
+	DMX_MEMORY_BASED_FILTERING = 8,
+};
+
+/*
+ * Demux resource type identifier.
+ */
+
+/**
+ * DMX_FE_ENTRY - Casts elements in the list of registered
+ *		  front-ends from the generic type struct list_head
+ *		  to the type * struct dmx_frontend
+ *
+ * @list: list of struct dmx_frontend
+ */
+#define DMX_FE_ENTRY(list) \
+	list_entry(list, struct dmx_frontend, connectivity_list)
+
+/**
+ * struct dmx_demux - Structure that contains the demux capabilities and
+ *		      callbacks.
+ *
+ * @capabilities: Bitfield of capability flags.
+ *
+ * @frontend: Front-end connected to the demux
+ *
+ * @priv: Pointer to private data of the API client
+ *
+ * @open: This function reserves the demux for use by the caller and, if
+ *	necessary, initializes the demux. When the demux is no longer needed,
+ *	the function @close should be called. It should be possible for
+ *	multiple clients to access the demux at the same time. Thus, the
+ *	function implementation should increment the demux usage count when
+ *	@open is called and decrement it when @close is called.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-EUSERS, if maximum usage count was reached;
+ *	-EINVAL, on bad parameter.
+ *
+ * @close: This function reserves the demux for use by the caller and, if
+ *	necessary, initializes the demux. When the demux is no longer needed,
+ *	the function @close should be called. It should be possible for
+ *	multiple clients to access the demux at the same time. Thus, the
+ *	function implementation should increment the demux usage count when
+ *	@open is called and decrement it when @close is called.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-ENODEV, if demux was not in use (e. g. no users);
+ *	-EINVAL, on bad parameter.
+ *
+ * @write: This function provides the demux driver with a memory buffer
+ *	containing TS packets. Instead of receiving TS packets from the DVB
+ *	front-end, the demux driver software will read packets from memory.
+ *	Any clients of this demux with active TS, PES or Section filters will
+ *	receive filtered data via the Demux callback API (see 0). The function
+ *	returns when all the data in the buffer has been consumed by the demux.
+ *	Demux hardware typically cannot read TS from memory. If this is the
+ *	case, memory-based filtering has to be implemented entirely in software.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @buf function parameter contains a pointer to the TS data in
+ *	kernel-space memory.
+ *	The @count function parameter contains the length of the TS data.
+ *	It returns:
+ *	0 on success;
+ *	-ERESTARTSYS, if mutex lock was interrupted;
+ *	-EINTR, if a signal handling is pending;
+ *	-ENODEV, if demux was removed;
+ *	-EINVAL, on bad parameter.
+ *
+ * @allocate_ts_feed: Allocates a new TS feed, which is used to filter the TS
+ *	packets carrying a certain PID. The TS feed normally corresponds to a
+ *	hardware PID filter on the demux chip.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @feed function parameter contains a pointer to the TS feed API and
+ *	instance data.
+ *	The @callback function parameter contains a pointer to the callback
+ *	function for passing received TS packet.
+ *	It returns:
+ *	0 on success;
+ *	-ERESTARTSYS, if mutex lock was interrupted;
+ *	-EBUSY, if no more TS feeds is available;
+ *	-EINVAL, on bad parameter.
+ *
+ * @release_ts_feed: Releases the resources allocated with @allocate_ts_feed.
+ *	Any filtering in progress on the TS feed should be stopped before
+ *	calling this function.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @feed function parameter contains a pointer to the TS feed API and
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-EINVAL on bad parameter.
+ *
+ * @allocate_section_feed: Allocates a new section feed, i.e. a demux resource
+ *	for filtering and receiving sections. On platforms with hardware
+ *	support for section filtering, a section feed is directly mapped to
+ *	the demux HW. On other platforms, TS packets are first PID filtered in
+ *	hardware and a hardware section filter then emulated in software. The
+ *	caller obtains an API pointer of type dmx_section_feed_t as an out
+ *	parameter. Using this API the caller can set filtering parameters and
+ *	start receiving sections.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @feed function parameter contains a pointer to the TS feed API and
+ *	instance data.
+ *	The @callback function parameter contains a pointer to the callback
+ *	function for passing received TS packet.
+ *	It returns:
+ *	0 on success;
+ *	-EBUSY, if no more TS feeds is available;
+ *	-EINVAL, on bad parameter.
+ *
+ * @release_section_feed: Releases the resources allocated with
+ *	@allocate_section_feed, including allocated filters. Any filtering in
+ *	progress on the section feed should be stopped before calling this
+ *	function.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @feed function parameter contains a pointer to the TS feed API and
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-EINVAL, on bad parameter.
+ *
+ * @add_frontend: Registers a connectivity between a demux and a front-end,
+ *	i.e., indicates that the demux can be connected via a call to
+ *	@connect_frontend to use the given front-end as a TS source. The
+ *	client of this function has to allocate dynamic or static memory for
+ *	the frontend structure and initialize its fields before calling this
+ *	function. This function is normally called during the driver
+ *	initialization. The caller must not free the memory of the frontend
+ *	struct before successfully calling @remove_frontend.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @frontend function parameter contains a pointer to the front-end
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-EINVAL, on bad parameter.
+ *
+ * @remove_frontend: Indicates that the given front-end, registered by a call
+ *	to @add_frontend, can no longer be connected as a TS source by this
+ *	demux. The function should be called when a front-end driver or a demux
+ *	driver is removed from the system. If the front-end is in use, the
+ *	function fails with the return value of -EBUSY. After successfully
+ *	calling this function, the caller can free the memory of the frontend
+ *	struct if it was dynamically allocated before the @add_frontend
+ *	operation.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @frontend function parameter contains a pointer to the front-end
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-ENODEV, if the front-end was not found,
+ *	-EINVAL, on bad parameter.
+ *
+ * @get_frontends: Provides the APIs of the front-ends that have been
+ *	registered for this demux. Any of the front-ends obtained with this
+ *	call can be used as a parameter for @connect_frontend. The include
+ *	file demux.h contains the macro DMX_FE_ENTRY() for converting an
+ *	element of the generic type struct &list_head * to the type
+ *	struct &dmx_frontend *. The caller must not free the memory of any of
+ *	the elements obtained via this function call.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	It returns a struct list_head pointer to the list of front-end
+ *	interfaces, or NULL in the case of an empty list.
+ *
+ * @connect_frontend: Connects the TS output of the front-end to the input of
+ *	the demux. A demux can only be connected to a front-end registered to
+ *	the demux with the function @add_frontend. It may or may not be
+ *	possible to connect multiple demuxes to the same front-end, depending
+ *	on the capabilities of the HW platform. When not used, the front-end
+ *	should be released by calling @disconnect_frontend.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @frontend function parameter contains a pointer to the front-end
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-EINVAL, on bad parameter.
+ *
+ * @disconnect_frontend: Disconnects the demux and a front-end previously
+ *	connected by a @connect_frontend call.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	It returns:
+ *	0 on success;
+ *	-EINVAL on bad parameter.
+ *
+ * @get_pes_pids: Get the PIDs for DMX_PES_AUDIO0, DMX_PES_VIDEO0,
+ *	DMX_PES_TELETEXT0, DMX_PES_SUBTITLE0 and DMX_PES_PCR0.
+ *	The @demux function parameter contains a pointer to the demux API and
+ *	instance data.
+ *	The @pids function parameter contains an array with five u16 elements
+ *	where the PIDs will be stored.
+ *	It returns:
+ *	0 on success;
+ *	-EINVAL on bad parameter.
+ */
+struct dmx_demux {
+	enum dmx_demux_caps capabilities;
+	struct dmx_frontend *frontend;
+	void *priv;
+	int (*open)(struct dmx_demux *demux);
+	int (*close)(struct dmx_demux *demux);
+	int (*write)(struct dmx_demux *demux, const char __user *buf,
+		     size_t count);
+	int (*allocate_ts_feed)(struct dmx_demux *demux,
+				struct dmx_ts_feed **feed,
+				dmx_ts_cb callback);
+	int (*release_ts_feed)(struct dmx_demux *demux,
+			       struct dmx_ts_feed *feed);
+	int (*allocate_section_feed)(struct dmx_demux *demux,
+				     struct dmx_section_feed **feed,
+				     dmx_section_cb callback);
+	int (*release_section_feed)(struct dmx_demux *demux,
+				    struct dmx_section_feed *feed);
+	int (*add_frontend)(struct dmx_demux *demux,
+			    struct dmx_frontend *frontend);
+	int (*remove_frontend)(struct dmx_demux *demux,
+			       struct dmx_frontend *frontend);
+	struct list_head *(*get_frontends)(struct dmx_demux *demux);
+	int (*connect_frontend)(struct dmx_demux *demux,
+				struct dmx_frontend *frontend);
+	int (*disconnect_frontend)(struct dmx_demux *demux);
+
+	int (*get_pes_pids)(struct dmx_demux *demux, u16 *pids);
+
+	/* private: */
+
+	/*
+	 * Only used at av7110, to read some data from firmware.
+	 * As this was never documented, we have no clue about what's
+	 * there, and its usage on other drivers aren't encouraged.
+	 */
+	int (*get_stc)(struct dmx_demux *demux, unsigned int num,
+		       u64 *stc, unsigned int *base);
+};
+
+#endif /* #ifndef __DEMUX_H */
diff --git a/include/media/dmxdev.h b/include/media/dmxdev.h
new file mode 100644
index 000000000000..2f5cb2c7b6a7
--- /dev/null
+++ b/include/media/dmxdev.h
@@ -0,0 +1,212 @@
+/*
+ * dmxdev.h
+ *
+ * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
+ *                    for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _DMXDEV_H_
+#define _DMXDEV_H_
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include <linux/dvb/dmx.h>
+
+#include <media/dvbdev.h>
+#include <media/demux.h>
+#include <media/dvb_ringbuffer.h>
+#include <media/dvb_vb2.h>
+
+/**
+ * enum dmxdev_type - type of demux filter type.
+ *
+ * @DMXDEV_TYPE_NONE:	no filter set.
+ * @DMXDEV_TYPE_SEC:	section filter.
+ * @DMXDEV_TYPE_PES:	Program Elementary Stream (PES) filter.
+ */
+enum dmxdev_type {
+	DMXDEV_TYPE_NONE,
+	DMXDEV_TYPE_SEC,
+	DMXDEV_TYPE_PES,
+};
+
+/**
+ * enum dmxdev_state - state machine for the dmxdev.
+ *
+ * @DMXDEV_STATE_FREE:		indicates that the filter is freed.
+ * @DMXDEV_STATE_ALLOCATED:	indicates that the filter was allocated
+ *				to be used.
+ * @DMXDEV_STATE_SET:		indicates that the filter parameters are set.
+ * @DMXDEV_STATE_GO:		indicates that the filter is running.
+ * @DMXDEV_STATE_DONE:		indicates that a packet was already filtered
+ *				and the filter is now disabled.
+ *				Set only if %DMX_ONESHOT. See
+ *				&dmx_sct_filter_params.
+ * @DMXDEV_STATE_TIMEDOUT:	Indicates a timeout condition.
+ */
+enum dmxdev_state {
+	DMXDEV_STATE_FREE,
+	DMXDEV_STATE_ALLOCATED,
+	DMXDEV_STATE_SET,
+	DMXDEV_STATE_GO,
+	DMXDEV_STATE_DONE,
+	DMXDEV_STATE_TIMEDOUT
+};
+
+/**
+ * struct dmxdev_feed - digital TV dmxdev feed
+ *
+ * @pid:	Program ID to be filtered
+ * @ts:		pointer to &struct dmx_ts_feed
+ * @next:	&struct list_head pointing to the next feed.
+ */
+
+struct dmxdev_feed {
+	u16 pid;
+	struct dmx_ts_feed *ts;
+	struct list_head next;
+};
+
+/**
+ * struct dmxdev_filter - digital TV dmxdev filter
+ *
+ * @filter:	a union describing a dmxdev filter.
+ *		Currently used only for section filters.
+ * @filter.sec: a &struct dmx_section_filter pointer.
+ *		For section filter only.
+ * @feed:	a union describing a dmxdev feed.
+ *		Depending on the filter type, it can be either
+ *		@feed.ts or @feed.sec.
+ * @feed.ts:	a &struct list_head list.
+ *		For TS and PES feeds.
+ * @feed.sec:	a &struct dmx_section_feed pointer.
+ *		For section feed only.
+ * @params:	a union describing dmxdev filter parameters.
+ *		Depending on the filter type, it can be either
+ *		@params.sec or @params.pes.
+ * @params.sec:	a &struct dmx_sct_filter_params embedded struct.
+ *		For section filter only.
+ * @params.pes:	a &struct dmx_pes_filter_params embedded struct.
+ *		For PES filter only.
+ * @type:	type of the dmxdev filter, as defined by &enum dmxdev_type.
+ * @state:	state of the dmxdev filter, as defined by &enum dmxdev_state.
+ * @dev:	pointer to &struct dmxdev.
+ * @buffer:	an embedded &struct dvb_ringbuffer buffer.
+ * @vb2_ctx:	control struct for VB2 handler
+ * @mutex:	protects the access to &struct dmxdev_filter.
+ * @timer:	&struct timer_list embedded timer, used to check for
+ *		feed timeouts.
+ *		Only for section filter.
+ * @todo:	index for the @secheader.
+ *		Only for section filter.
+ * @secheader:	buffer cache to parse the section header.
+ *		Only for section filter.
+ */
+struct dmxdev_filter {
+	union {
+		struct dmx_section_filter *sec;
+	} filter;
+
+	union {
+		/* list of TS and PES feeds (struct dmxdev_feed) */
+		struct list_head ts;
+		struct dmx_section_feed *sec;
+	} feed;
+
+	union {
+		struct dmx_sct_filter_params sec;
+		struct dmx_pes_filter_params pes;
+	} params;
+
+	enum dmxdev_type type;
+	enum dmxdev_state state;
+	struct dmxdev *dev;
+	struct dvb_ringbuffer buffer;
+	struct dvb_vb2_ctx vb2_ctx;
+
+	struct mutex mutex;
+
+	/* only for sections */
+	struct timer_list timer;
+	int todo;
+	u8 secheader[3];
+};
+
+/**
+ * struct dmxdev - Describes a digital TV demux device.
+ *
+ * @dvbdev:		pointer to &struct dvb_device associated with
+ *			the demux device node.
+ * @dvr_dvbdev:		pointer to &struct dvb_device associated with
+ *			the dvr device node.
+ * @filter:		pointer to &struct dmxdev_filter.
+ * @demux:		pointer to &struct dmx_demux.
+ * @filternum:		number of filters.
+ * @capabilities:	demux capabilities as defined by &enum dmx_demux_caps.
+ * @exit:		flag to indicate that the demux is being released.
+ * @dvr_orig_fe:	pointer to &struct dmx_frontend.
+ * @dvr_buffer:		embedded &struct dvb_ringbuffer for DVB output.
+ * @dvr_vb2_ctx:	control struct for VB2 handler
+ * @mutex:		protects the usage of this structure.
+ * @lock:		protects access to &dmxdev->filter->data.
+ */
+struct dmxdev {
+	struct dvb_device *dvbdev;
+	struct dvb_device *dvr_dvbdev;
+
+	struct dmxdev_filter *filter;
+	struct dmx_demux *demux;
+
+	int filternum;
+	int capabilities;
+
+	unsigned int exit:1;
+#define DMXDEV_CAP_DUPLEX 1
+	struct dmx_frontend *dvr_orig_fe;
+
+	struct dvb_ringbuffer dvr_buffer;
+#define DVR_BUFFER_SIZE (10*188*1024)
+
+	struct dvb_vb2_ctx dvr_vb2_ctx;
+
+	struct mutex mutex;
+	spinlock_t lock;
+};
+
+/**
+ * dvb_dmxdev_init - initializes a digital TV demux and registers both demux
+ *	and DVR devices.
+ *
+ * @dmxdev: pointer to &struct dmxdev.
+ * @adap: pointer to &struct dvb_adapter.
+ */
+int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *adap);
+
+/**
+ * dvb_dmxdev_release - releases a digital TV demux and unregisters it.
+ *
+ * @dmxdev: pointer to &struct dmxdev.
+ */
+void dvb_dmxdev_release(struct dmxdev *dmxdev);
+
+#endif /* _DMXDEV_H_ */
diff --git a/include/media/drv-intf/cx2341x.h b/include/media/drv-intf/cx2341x.h
index 9635eebaab09..33a97bfcea58 100644
--- a/include/media/drv-intf/cx2341x.h
+++ b/include/media/drv-intf/cx2341x.h
@@ -29,8 +29,8 @@ enum cx2341x_port {
 
 enum cx2341x_cap {
 	CX2341X_CAP_HAS_SLICED_VBI = 1 << 0,
-	CX2341X_CAP_HAS_TS 	   = 1 << 1,
-	CX2341X_CAP_HAS_AC3 	   = 1 << 2,
+	CX2341X_CAP_HAS_TS	   = 1 << 1,
+	CX2341X_CAP_HAS_AC3	   = 1 << 2,
 };
 
 struct cx2341x_mpeg_params {
@@ -204,92 +204,92 @@ void cx2341x_handler_set_busy(struct cx2341x_handler *cxhdl, int busy);
 /* Firmware API commands */
 
 /* MPEG decoder API, specific to the cx23415 */
-#define CX2341X_DEC_PING_FW 			0x00
-#define CX2341X_DEC_START_PLAYBACK 		0x01
-#define CX2341X_DEC_STOP_PLAYBACK 		0x02
-#define CX2341X_DEC_SET_PLAYBACK_SPEED 		0x03
-#define CX2341X_DEC_STEP_VIDEO 			0x05
-#define CX2341X_DEC_SET_DMA_BLOCK_SIZE 		0x08
+#define CX2341X_DEC_PING_FW			0x00
+#define CX2341X_DEC_START_PLAYBACK		0x01
+#define CX2341X_DEC_STOP_PLAYBACK		0x02
+#define CX2341X_DEC_SET_PLAYBACK_SPEED		0x03
+#define CX2341X_DEC_STEP_VIDEO			0x05
+#define CX2341X_DEC_SET_DMA_BLOCK_SIZE		0x08
 #define CX2341X_DEC_GET_XFER_INFO		0x09
 #define CX2341X_DEC_GET_DMA_STATUS		0x0a
 #define CX2341X_DEC_SCHED_DMA_FROM_HOST		0x0b
-#define CX2341X_DEC_PAUSE_PLAYBACK 		0x0d
-#define CX2341X_DEC_HALT_FW 			0x0e
-#define CX2341X_DEC_SET_STANDARD 		0x10
+#define CX2341X_DEC_PAUSE_PLAYBACK		0x0d
+#define CX2341X_DEC_HALT_FW			0x0e
+#define CX2341X_DEC_SET_STANDARD		0x10
 #define CX2341X_DEC_GET_VERSION			0x11
-#define CX2341X_DEC_SET_STREAM_INPUT 		0x14
-#define CX2341X_DEC_GET_TIMING_INFO 		0x15
-#define CX2341X_DEC_SET_AUDIO_MODE 		0x16
+#define CX2341X_DEC_SET_STREAM_INPUT		0x14
+#define CX2341X_DEC_GET_TIMING_INFO		0x15
+#define CX2341X_DEC_SET_AUDIO_MODE		0x16
 #define CX2341X_DEC_SET_EVENT_NOTIFICATION	0x17
 #define CX2341X_DEC_SET_DISPLAY_BUFFERS		0x18
-#define CX2341X_DEC_EXTRACT_VBI 		0x19
-#define CX2341X_DEC_SET_DECODER_SOURCE 		0x1a
+#define CX2341X_DEC_EXTRACT_VBI			0x19
+#define CX2341X_DEC_SET_DECODER_SOURCE		0x1a
 #define CX2341X_DEC_SET_PREBUFFERING		0x1e
 
 /* MPEG encoder API */
-#define CX2341X_ENC_PING_FW 			0x80
-#define CX2341X_ENC_START_CAPTURE 		0x81
-#define CX2341X_ENC_STOP_CAPTURE 		0x82
-#define CX2341X_ENC_SET_AUDIO_ID 		0x89
-#define CX2341X_ENC_SET_VIDEO_ID 		0x8b
-#define CX2341X_ENC_SET_PCR_ID 			0x8d
-#define CX2341X_ENC_SET_FRAME_RATE 		0x8f
-#define CX2341X_ENC_SET_FRAME_SIZE 		0x91
-#define CX2341X_ENC_SET_BIT_RATE 		0x95
-#define CX2341X_ENC_SET_GOP_PROPERTIES 		0x97
-#define CX2341X_ENC_SET_ASPECT_RATIO 		0x99
-#define CX2341X_ENC_SET_DNR_FILTER_MODE 	0x9b
-#define CX2341X_ENC_SET_DNR_FILTER_PROPS 	0x9d
-#define CX2341X_ENC_SET_CORING_LEVELS 		0x9f
-#define CX2341X_ENC_SET_SPATIAL_FILTER_TYPE 	0xa1
-#define CX2341X_ENC_SET_VBI_LINE 		0xb7
-#define CX2341X_ENC_SET_STREAM_TYPE 		0xb9
-#define CX2341X_ENC_SET_OUTPUT_PORT 		0xbb
-#define CX2341X_ENC_SET_AUDIO_PROPERTIES 	0xbd
-#define CX2341X_ENC_HALT_FW 			0xc3
+#define CX2341X_ENC_PING_FW			0x80
+#define CX2341X_ENC_START_CAPTURE		0x81
+#define CX2341X_ENC_STOP_CAPTURE		0x82
+#define CX2341X_ENC_SET_AUDIO_ID		0x89
+#define CX2341X_ENC_SET_VIDEO_ID		0x8b
+#define CX2341X_ENC_SET_PCR_ID			0x8d
+#define CX2341X_ENC_SET_FRAME_RATE		0x8f
+#define CX2341X_ENC_SET_FRAME_SIZE		0x91
+#define CX2341X_ENC_SET_BIT_RATE		0x95
+#define CX2341X_ENC_SET_GOP_PROPERTIES		0x97
+#define CX2341X_ENC_SET_ASPECT_RATIO		0x99
+#define CX2341X_ENC_SET_DNR_FILTER_MODE		0x9b
+#define CX2341X_ENC_SET_DNR_FILTER_PROPS	0x9d
+#define CX2341X_ENC_SET_CORING_LEVELS		0x9f
+#define CX2341X_ENC_SET_SPATIAL_FILTER_TYPE	0xa1
+#define CX2341X_ENC_SET_VBI_LINE		0xb7
+#define CX2341X_ENC_SET_STREAM_TYPE		0xb9
+#define CX2341X_ENC_SET_OUTPUT_PORT		0xbb
+#define CX2341X_ENC_SET_AUDIO_PROPERTIES	0xbd
+#define CX2341X_ENC_HALT_FW			0xc3
 #define CX2341X_ENC_GET_VERSION			0xc4
-#define CX2341X_ENC_SET_GOP_CLOSURE 		0xc5
-#define CX2341X_ENC_GET_SEQ_END 		0xc6
-#define CX2341X_ENC_SET_PGM_INDEX_INFO 		0xc7
+#define CX2341X_ENC_SET_GOP_CLOSURE		0xc5
+#define CX2341X_ENC_GET_SEQ_END			0xc6
+#define CX2341X_ENC_SET_PGM_INDEX_INFO		0xc7
 #define CX2341X_ENC_SET_VBI_CONFIG		0xc8
-#define CX2341X_ENC_SET_DMA_BLOCK_SIZE 		0xc9
+#define CX2341X_ENC_SET_DMA_BLOCK_SIZE		0xc9
 #define CX2341X_ENC_GET_PREV_DMA_INFO_MB_10	0xca
 #define CX2341X_ENC_GET_PREV_DMA_INFO_MB_9	0xcb
-#define CX2341X_ENC_SCHED_DMA_TO_HOST 		0xcc
-#define CX2341X_ENC_INITIALIZE_INPUT 		0xcd
-#define CX2341X_ENC_SET_FRAME_DROP_RATE 	0xd0
-#define CX2341X_ENC_PAUSE_ENCODER 		0xd2
-#define CX2341X_ENC_REFRESH_INPUT 		0xd3
+#define CX2341X_ENC_SCHED_DMA_TO_HOST		0xcc
+#define CX2341X_ENC_INITIALIZE_INPUT		0xcd
+#define CX2341X_ENC_SET_FRAME_DROP_RATE		0xd0
+#define CX2341X_ENC_PAUSE_ENCODER		0xd2
+#define CX2341X_ENC_REFRESH_INPUT		0xd3
 #define CX2341X_ENC_SET_COPYRIGHT		0xd4
-#define CX2341X_ENC_SET_EVENT_NOTIFICATION 	0xd5
-#define CX2341X_ENC_SET_NUM_VSYNC_LINES 	0xd6
-#define CX2341X_ENC_SET_PLACEHOLDER 		0xd7
-#define CX2341X_ENC_MUTE_VIDEO 			0xd9
-#define CX2341X_ENC_MUTE_AUDIO 			0xda
+#define CX2341X_ENC_SET_EVENT_NOTIFICATION	0xd5
+#define CX2341X_ENC_SET_NUM_VSYNC_LINES		0xd6
+#define CX2341X_ENC_SET_PLACEHOLDER		0xd7
+#define CX2341X_ENC_MUTE_VIDEO			0xd9
+#define CX2341X_ENC_MUTE_AUDIO			0xda
 #define CX2341X_ENC_SET_VERT_CROP_LINE		0xdb
-#define CX2341X_ENC_MISC 			0xdc
+#define CX2341X_ENC_MISC			0xdc
 
 /* OSD API, specific to the cx23415 */
-#define CX2341X_OSD_GET_FRAMEBUFFER 		0x41
-#define CX2341X_OSD_GET_PIXEL_FORMAT 		0x42
-#define CX2341X_OSD_SET_PIXEL_FORMAT 		0x43
-#define CX2341X_OSD_GET_STATE 			0x44
-#define CX2341X_OSD_SET_STATE 			0x45
-#define CX2341X_OSD_GET_OSD_COORDS 		0x46
-#define CX2341X_OSD_SET_OSD_COORDS 		0x47
-#define CX2341X_OSD_GET_SCREEN_COORDS 		0x48
-#define CX2341X_OSD_SET_SCREEN_COORDS 		0x49
-#define CX2341X_OSD_GET_GLOBAL_ALPHA 		0x4a
-#define CX2341X_OSD_SET_GLOBAL_ALPHA 		0x4b
-#define CX2341X_OSD_SET_BLEND_COORDS 		0x4c
-#define CX2341X_OSD_GET_FLICKER_STATE 		0x4f
-#define CX2341X_OSD_SET_FLICKER_STATE 		0x50
-#define CX2341X_OSD_BLT_COPY 			0x52
-#define CX2341X_OSD_BLT_FILL 			0x53
-#define CX2341X_OSD_BLT_TEXT 			0x54
-#define CX2341X_OSD_SET_FRAMEBUFFER_WINDOW 	0x56
-#define CX2341X_OSD_SET_CHROMA_KEY 		0x60
-#define CX2341X_OSD_GET_ALPHA_CONTENT_INDEX 	0x61
-#define CX2341X_OSD_SET_ALPHA_CONTENT_INDEX 	0x62
+#define CX2341X_OSD_GET_FRAMEBUFFER		0x41
+#define CX2341X_OSD_GET_PIXEL_FORMAT		0x42
+#define CX2341X_OSD_SET_PIXEL_FORMAT		0x43
+#define CX2341X_OSD_GET_STATE			0x44
+#define CX2341X_OSD_SET_STATE			0x45
+#define CX2341X_OSD_GET_OSD_COORDS		0x46
+#define CX2341X_OSD_SET_OSD_COORDS		0x47
+#define CX2341X_OSD_GET_SCREEN_COORDS		0x48
+#define CX2341X_OSD_SET_SCREEN_COORDS		0x49
+#define CX2341X_OSD_GET_GLOBAL_ALPHA		0x4a
+#define CX2341X_OSD_SET_GLOBAL_ALPHA		0x4b
+#define CX2341X_OSD_SET_BLEND_COORDS		0x4c
+#define CX2341X_OSD_GET_FLICKER_STATE		0x4f
+#define CX2341X_OSD_SET_FLICKER_STATE		0x50
+#define CX2341X_OSD_BLT_COPY			0x52
+#define CX2341X_OSD_BLT_FILL			0x53
+#define CX2341X_OSD_BLT_TEXT			0x54
+#define CX2341X_OSD_SET_FRAMEBUFFER_WINDOW	0x56
+#define CX2341X_OSD_SET_CHROMA_KEY		0x60
+#define CX2341X_OSD_GET_ALPHA_CONTENT_INDEX	0x61
+#define CX2341X_OSD_SET_ALPHA_CONTENT_INDEX	0x62
 
 #endif /* CX2341X_H */
diff --git a/include/media/drv-intf/exynos-fimc.h b/include/media/drv-intf/exynos-fimc.h
index 69bcd2a07d5c..f9c64338841f 100644
--- a/include/media/drv-intf/exynos-fimc.h
+++ b/include/media/drv-intf/exynos-fimc.h
@@ -155,7 +155,8 @@ static inline struct exynos_video_entity *vdev_to_exynos_video_entity(
 }
 
 #define fimc_pipeline_call(ent, op, args...)				  \
-	(!(ent) ? -ENOENT : (((ent)->pipe->ops && (ent)->pipe->ops->op) ? \
+	((!(ent) || !(ent)->pipe) ? -ENOENT : \
+	(((ent)->pipe->ops && (ent)->pipe->ops->op) ? \
 	(ent)->pipe->ops->op(((ent)->pipe), ##args) : -ENOIOCTLCMD))	  \
 
 #endif /* S5P_FIMC_H_ */
diff --git a/include/media/drv-intf/msp3400.h b/include/media/drv-intf/msp3400.h
index 1e6e80213a77..db98ce49e17b 100644
--- a/include/media/drv-intf/msp3400.h
+++ b/include/media/drv-intf/msp3400.h
@@ -80,17 +80,17 @@
  */
 
 /* SCART input to DSP selection */
-#define MSP_IN_SCART1  		0  /* Pin SC1_IN */
-#define MSP_IN_SCART2  		1  /* Pin SC2_IN */
-#define MSP_IN_SCART3  		2  /* Pin SC3_IN */
-#define MSP_IN_SCART4  		3  /* Pin SC4_IN */
-#define MSP_IN_MONO     	6  /* Pin MONO_IN */
-#define MSP_IN_MUTE     	7  /* Mute DSP input */
-#define MSP_SCART_TO_DSP(in) 	(in)
+#define MSP_IN_SCART1		0  /* Pin SC1_IN */
+#define MSP_IN_SCART2		1  /* Pin SC2_IN */
+#define MSP_IN_SCART3		2  /* Pin SC3_IN */
+#define MSP_IN_SCART4		3  /* Pin SC4_IN */
+#define MSP_IN_MONO		6  /* Pin MONO_IN */
+#define MSP_IN_MUTE		7  /* Mute DSP input */
+#define MSP_SCART_TO_DSP(in)	(in)
 /* Tuner input to demodulator and DSP selection */
-#define MSP_IN_TUNER1 		0  /* Analog Sound IF input pin ANA_IN1 */
-#define MSP_IN_TUNER2 		1  /* Analog Sound IF input pin ANA_IN2 */
-#define MSP_TUNER_TO_DSP(in) 	((in) << 3)
+#define MSP_IN_TUNER1		0  /* Analog Sound IF input pin ANA_IN1 */
+#define MSP_IN_TUNER2		1  /* Analog Sound IF input pin ANA_IN2 */
+#define MSP_TUNER_TO_DSP(in)	((in) << 3)
 
 /* The msp has up to 5 DSP outputs, each output can independently select
    a DSP input.
@@ -109,30 +109,30 @@
    DSP. This is currently not implemented. Also not implemented is the
    multi-channel capable I2S3 input of the 44x0G. If someone can demonstrate
    a need for one of those features then additional support can be added. */
-#define MSP_DSP_IN_TUNER 	0  /* Tuner DSP input */
-#define MSP_DSP_IN_SCART 	2  /* SCART DSP input */
-#define MSP_DSP_IN_I2S1 	5  /* I2S1 DSP input */
-#define MSP_DSP_IN_I2S2 	6  /* I2S2 DSP input */
-#define MSP_DSP_IN_I2S3    	7  /* I2S3 DSP input */
-#define MSP_DSP_IN_MAIN_AVC 	11 /* MAIN AVC processed DSP input */
-#define MSP_DSP_IN_MAIN 	12 /* MAIN DSP input */
-#define MSP_DSP_IN_AUX 		13 /* AUX DSP input */
-#define MSP_DSP_TO_MAIN(in)   	((in) << 4)
-#define MSP_DSP_TO_AUX(in)    	((in) << 8)
-#define MSP_DSP_TO_SCART1(in) 	((in) << 12)
-#define MSP_DSP_TO_SCART2(in) 	((in) << 16)
-#define MSP_DSP_TO_I2S(in)    	((in) << 20)
+#define MSP_DSP_IN_TUNER	0  /* Tuner DSP input */
+#define MSP_DSP_IN_SCART	2  /* SCART DSP input */
+#define MSP_DSP_IN_I2S1		5  /* I2S1 DSP input */
+#define MSP_DSP_IN_I2S2		6  /* I2S2 DSP input */
+#define MSP_DSP_IN_I2S3		7  /* I2S3 DSP input */
+#define MSP_DSP_IN_MAIN_AVC	11 /* MAIN AVC processed DSP input */
+#define MSP_DSP_IN_MAIN		12 /* MAIN DSP input */
+#define MSP_DSP_IN_AUX		13 /* AUX DSP input */
+#define MSP_DSP_TO_MAIN(in)	((in) << 4)
+#define MSP_DSP_TO_AUX(in)	((in) << 8)
+#define MSP_DSP_TO_SCART1(in)	((in) << 12)
+#define MSP_DSP_TO_SCART2(in)	((in) << 16)
+#define MSP_DSP_TO_I2S(in)	((in) << 20)
 
 /* Output SCART select: the SCART outputs can select which input
    to use. */
-#define MSP_SC_IN_SCART1 	0  /* SCART1 input, bypassing the DSP */
-#define MSP_SC_IN_SCART2 	1  /* SCART2 input, bypassing the DSP */
-#define MSP_SC_IN_SCART3 	2  /* SCART3 input, bypassing the DSP */
-#define MSP_SC_IN_SCART4 	3  /* SCART4 input, bypassing the DSP */
-#define MSP_SC_IN_DSP_SCART1 	4  /* DSP SCART1 input */
-#define MSP_SC_IN_DSP_SCART2 	5  /* DSP SCART2 input */
-#define MSP_SC_IN_MONO 		6  /* MONO input, bypassing the DSP */
-#define MSP_SC_IN_MUTE 		7  /* MUTE output */
+#define MSP_SC_IN_SCART1	0  /* SCART1 input, bypassing the DSP */
+#define MSP_SC_IN_SCART2	1  /* SCART2 input, bypassing the DSP */
+#define MSP_SC_IN_SCART3	2  /* SCART3 input, bypassing the DSP */
+#define MSP_SC_IN_SCART4	3  /* SCART4 input, bypassing the DSP */
+#define MSP_SC_IN_DSP_SCART1	4  /* DSP SCART1 input */
+#define MSP_SC_IN_DSP_SCART2	5  /* DSP SCART2 input */
+#define MSP_SC_IN_MONO		6  /* MONO input, bypassing the DSP */
+#define MSP_SC_IN_MUTE		7  /* MUTE output */
 #define MSP_SC_TO_SCART1(in)	(in)
 #define MSP_SC_TO_SCART2(in)	((in) << 4)
 
diff --git a/include/media/drv-intf/saa7146.h b/include/media/drv-intf/saa7146.h
index 769c6cf7eb4c..a7bf2c4a2e4d 100644
--- a/include/media/drv-intf/saa7146.h
+++ b/include/media/drv-intf/saa7146.h
@@ -118,7 +118,7 @@ struct saa7146_dev
 {
 	struct module			*module;
 
-	struct v4l2_device 		v4l2_dev;
+	struct v4l2_device		v4l2_dev;
 	struct v4l2_ctrl_handler	ctrl_handler;
 
 	/* different device locks */
diff --git a/include/media/dvb-usb-ids.h b/include/media/dvb-usb-ids.h
new file mode 100644
index 000000000000..28e2be5c8a98
--- /dev/null
+++ b/include/media/dvb-usb-ids.h
@@ -0,0 +1,424 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* dvb-usb-ids.h is part of the DVB USB library.
+ *
+ * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) see
+ * dvb-usb-init.c for copyright information.
+ *
+ * a header file containing define's for the USB device supported by the
+ * various drivers.
+ */
+#ifndef _DVB_USB_IDS_H_
+#define _DVB_USB_IDS_H_
+
+/* Vendor IDs */
+#define USB_VID_ADSTECH				0x06e1
+#define USB_VID_AFATECH				0x15a4
+#define USB_VID_ALCOR_MICRO			0x058f
+#define USB_VID_ALINK				0x05e3
+#define USB_VID_AMT				0x1c73
+#define USB_VID_ANCHOR				0x0547
+#define USB_VID_ANSONIC				0x10b9
+#define USB_VID_ANUBIS_ELECTRONIC		0x10fd
+#define USB_VID_ASUS				0x0b05
+#define USB_VID_AVERMEDIA			0x07ca
+#define USB_VID_COMPRO				0x185b
+#define USB_VID_COMPRO_UNK			0x145f
+#define USB_VID_CONEXANT			0x0572
+#define USB_VID_CYPRESS				0x04b4
+#define USB_VID_DEXATEK				0x1d19
+#define USB_VID_DIBCOM				0x10b8
+#define USB_VID_DPOSH				0x1498
+#define USB_VID_DVICO				0x0fe9
+#define USB_VID_E3C				0x18b4
+#define USB_VID_ELGATO				0x0fd9
+#define USB_VID_EMPIA				0xeb1a
+#define USB_VID_GENPIX				0x09c0
+#define USB_VID_GRANDTEC			0x5032
+#define USB_VID_GTEK				0x1f4d
+#define USB_VID_HANFTEK				0x15f4
+#define USB_VID_HAUPPAUGE			0x2040
+#define USB_VID_HYPER_PALTEK			0x1025
+#define USB_VID_INTEL				0x8086
+#define USB_VID_ITETECH				0x048d
+#define USB_VID_KWORLD				0xeb2a
+#define USB_VID_KWORLD_2			0x1b80
+#define USB_VID_KYE				0x0458
+#define USB_VID_LEADTEK				0x0413
+#define USB_VID_LITEON				0x04ca
+#define USB_VID_MEDION				0x1660
+#define USB_VID_MIGLIA				0x18f3
+#define USB_VID_MSI				0x0db0
+#define USB_VID_MSI_2				0x1462
+#define USB_VID_OPERA1				0x695c
+#define USB_VID_PINNACLE			0x2304
+#define USB_VID_PCTV				0x2013
+#define USB_VID_PIXELVIEW			0x1554
+#define USB_VID_REALTEK				0x0bda
+#define USB_VID_TECHNOTREND			0x0b48
+#define USB_VID_TERRATEC			0x0ccd
+#define USB_VID_TELESTAR			0x10b9
+#define USB_VID_VISIONPLUS			0x13d3
+#define USB_VID_SONY				0x1415
+#define USB_PID_TEVII_S421			0xd421
+#define USB_PID_TEVII_S480_1			0xd481
+#define USB_PID_TEVII_S480_2			0xd482
+#define USB_PID_TEVII_S630			0xd630
+#define USB_PID_TEVII_S632			0xd632
+#define USB_PID_TEVII_S650			0xd650
+#define USB_PID_TEVII_S660			0xd660
+#define USB_PID_TEVII_S662			0xd662
+#define USB_VID_TWINHAN				0x1822
+#define USB_VID_ULTIMA_ELECTRONIC		0x05d8
+#define USB_VID_UNIWILL				0x1584
+#define USB_VID_WIDEVIEW			0x14aa
+#define USB_VID_GIGABYTE			0x1044
+#define USB_VID_YUAN				0x1164
+#define USB_VID_XTENSIONS			0x1ae7
+#define USB_VID_ZYDAS				0x0ace
+#define USB_VID_HUMAX_COEX			0x10b9
+#define USB_VID_774				0x7a69
+#define USB_VID_EVOLUTEPC			0x1e59
+#define USB_VID_AZUREWAVE			0x13d3
+#define USB_VID_TECHNISAT			0x14f7
+#define USB_VID_HAMA				0x147f
+#define USB_VID_MICROSOFT			0x045e
+
+/* Product IDs */
+#define USB_PID_ADSTECH_USB2_COLD			0xa333
+#define USB_PID_ADSTECH_USB2_WARM			0xa334
+#define USB_PID_AFATECH_AF9005				0x9020
+#define USB_PID_AFATECH_AF9015_9015			0x9015
+#define USB_PID_AFATECH_AF9015_9016			0x9016
+#define USB_PID_AFATECH_AF9035_1000			0x1000
+#define USB_PID_AFATECH_AF9035_1001			0x1001
+#define USB_PID_AFATECH_AF9035_1002			0x1002
+#define USB_PID_AFATECH_AF9035_1003			0x1003
+#define USB_PID_AFATECH_AF9035_9035			0x9035
+#define USB_PID_TREKSTOR_DVBT				0x901b
+#define USB_PID_TREKSTOR_TERRES_2_0			0xC803
+#define USB_VID_ALINK_DTU				0xf170
+#define USB_PID_ANSONIC_DVBT_USB			0x6000
+#define USB_PID_ANYSEE					0x861f
+#define USB_PID_AZUREWAVE_AD_TU700			0x3237
+#define USB_PID_AZUREWAVE_6007				0x0ccd
+#define USB_PID_AVERMEDIA_DVBT_USB_COLD			0x0001
+#define USB_PID_AVERMEDIA_DVBT_USB_WARM			0x0002
+#define USB_PID_AVERMEDIA_DVBT_USB2_COLD		0xa800
+#define USB_PID_AVERMEDIA_DVBT_USB2_WARM		0xa801
+#define USB_PID_COMPRO_DVBU2000_COLD			0xd000
+#define USB_PID_COMPRO_DVBU2000_WARM			0xd001
+#define USB_PID_COMPRO_DVBU2000_UNK_COLD		0x010c
+#define USB_PID_COMPRO_DVBU2000_UNK_WARM		0x010d
+#define USB_PID_COMPRO_VIDEOMATE_U500			0x1e78
+#define USB_PID_COMPRO_VIDEOMATE_U500_PC		0x1e80
+#define USB_PID_CONCEPTRONIC_CTVDIGRCU			0xe397
+#define USB_PID_CONEXANT_D680_DMB			0x86d6
+#define USB_PID_CREATIX_CTX1921				0x1921
+#define USB_PID_DELOCK_USB2_DVBT			0xb803
+#define USB_PID_DIBCOM_HOOK_DEFAULT			0x0064
+#define USB_PID_DIBCOM_HOOK_DEFAULT_REENUM		0x0065
+#define USB_PID_DIBCOM_MOD3000_COLD			0x0bb8
+#define USB_PID_DIBCOM_MOD3000_WARM			0x0bb9
+#define USB_PID_DIBCOM_MOD3001_COLD			0x0bc6
+#define USB_PID_DIBCOM_MOD3001_WARM			0x0bc7
+#define USB_PID_DIBCOM_STK7700P				0x1e14
+#define USB_PID_DIBCOM_STK7700P_PC			0x1e78
+#define USB_PID_DIBCOM_STK7700D				0x1ef0
+#define USB_PID_DIBCOM_STK7700_U7000			0x7001
+#define USB_PID_DIBCOM_STK7070P				0x1ebc
+#define USB_PID_DIBCOM_STK7070PD			0x1ebe
+#define USB_PID_DIBCOM_STK807XP				0x1f90
+#define USB_PID_DIBCOM_STK807XPVR			0x1f98
+#define USB_PID_DIBCOM_STK8096GP                        0x1fa0
+#define USB_PID_DIBCOM_STK8096PVR                       0x1faa
+#define USB_PID_DIBCOM_NIM8096MD                        0x1fa8
+#define USB_PID_DIBCOM_TFE8096P				0x1f9C
+#define USB_PID_DIBCOM_ANCHOR_2135_COLD			0x2131
+#define USB_PID_DIBCOM_STK7770P				0x1e80
+#define USB_PID_DIBCOM_NIM7090				0x1bb2
+#define USB_PID_DIBCOM_TFE7090PVR			0x1bb4
+#define USB_PID_DIBCOM_TFE7790P				0x1e6e
+#define USB_PID_DIBCOM_NIM9090M				0x2383
+#define USB_PID_DIBCOM_NIM9090MD			0x2384
+#define USB_PID_DPOSH_M9206_COLD			0x9206
+#define USB_PID_DPOSH_M9206_WARM			0xa090
+#define USB_PID_E3C_EC168				0x1689
+#define USB_PID_E3C_EC168_2				0xfffa
+#define USB_PID_E3C_EC168_3				0xfffb
+#define USB_PID_E3C_EC168_4				0x1001
+#define USB_PID_E3C_EC168_5				0x1002
+#define USB_PID_FREECOM_DVBT				0x0160
+#define USB_PID_FREECOM_DVBT_2				0x0161
+#define USB_PID_UNIWILL_STK7700P			0x6003
+#define USB_PID_GENIUS_TVGO_DVB_T03			0x4012
+#define USB_PID_GRANDTEC_DVBT_USB_COLD			0x0fa0
+#define USB_PID_GRANDTEC_DVBT_USB_WARM			0x0fa1
+#define USB_PID_GOTVIEW_SAT_HD				0x5456
+#define USB_PID_INTEL_CE9500				0x9500
+#define USB_PID_ITETECH_IT9135				0x9135
+#define USB_PID_ITETECH_IT9135_9005			0x9005
+#define USB_PID_ITETECH_IT9135_9006			0x9006
+#define USB_PID_ITETECH_IT9303				0x9306
+#define USB_PID_KWORLD_399U				0xe399
+#define USB_PID_KWORLD_399U_2				0xe400
+#define USB_PID_KWORLD_395U				0xe396
+#define USB_PID_KWORLD_395U_2				0xe39b
+#define USB_PID_KWORLD_395U_3				0xe395
+#define USB_PID_KWORLD_395U_4				0xe39a
+#define USB_PID_KWORLD_MC810				0xc810
+#define USB_PID_KWORLD_PC160_2T				0xc160
+#define USB_PID_KWORLD_PC160_T				0xc161
+#define USB_PID_KWORLD_UB383_T				0xe383
+#define USB_PID_KWORLD_UB499_2T_T09			0xe409
+#define USB_PID_KWORLD_VSTREAM_COLD			0x17de
+#define USB_PID_KWORLD_VSTREAM_WARM			0x17df
+#define USB_PID_PROF_1100				0xb012
+#define USB_PID_TERRATEC_CINERGY_S			0x0064
+#define USB_PID_TERRATEC_CINERGY_T_USB_XE		0x0055
+#define USB_PID_TERRATEC_CINERGY_T_USB_XE_REV2		0x0069
+#define USB_PID_TERRATEC_CINERGY_T_STICK		0x0093
+#define USB_PID_TERRATEC_CINERGY_T_STICK_RC		0x0097
+#define USB_PID_TERRATEC_CINERGY_T_STICK_DUAL_RC	0x0099
+#define USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1	0x00a9
+#define USB_PID_TWINHAN_VP7041_COLD			0x3201
+#define USB_PID_TWINHAN_VP7041_WARM			0x3202
+#define USB_PID_TWINHAN_VP7020_COLD			0x3203
+#define USB_PID_TWINHAN_VP7020_WARM			0x3204
+#define USB_PID_TWINHAN_VP7045_COLD			0x3205
+#define USB_PID_TWINHAN_VP7045_WARM			0x3206
+#define USB_PID_TWINHAN_VP7021_COLD			0x3207
+#define USB_PID_TWINHAN_VP7021_WARM			0x3208
+#define USB_PID_TWINHAN_VP7049				0x3219
+#define USB_PID_TINYTWIN				0x3226
+#define USB_PID_TINYTWIN_2				0xe402
+#define USB_PID_TINYTWIN_3				0x9016
+#define USB_PID_DNTV_TINYUSB2_COLD			0x3223
+#define USB_PID_DNTV_TINYUSB2_WARM			0x3224
+#define USB_PID_ULTIMA_TVBOX_COLD			0x8105
+#define USB_PID_ULTIMA_TVBOX_WARM			0x8106
+#define USB_PID_ULTIMA_TVBOX_AN2235_COLD		0x8107
+#define USB_PID_ULTIMA_TVBOX_AN2235_WARM		0x8108
+#define USB_PID_ULTIMA_TVBOX_ANCHOR_COLD		0x2235
+#define USB_PID_ULTIMA_TVBOX_USB2_COLD			0x8109
+#define USB_PID_ULTIMA_TVBOX_USB2_WARM			0x810a
+#define USB_PID_ARTEC_T14_COLD				0x810b
+#define USB_PID_ARTEC_T14_WARM				0x810c
+#define USB_PID_ARTEC_T14BR				0x810f
+#define USB_PID_ULTIMA_TVBOX_USB2_FX_COLD		0x8613
+#define USB_PID_ULTIMA_TVBOX_USB2_FX_WARM		0x1002
+#define USB_PID_UNK_HYPER_PALTEK_COLD			0x005e
+#define USB_PID_UNK_HYPER_PALTEK_WARM			0x005f
+#define USB_PID_HANFTEK_UMT_010_COLD			0x0001
+#define USB_PID_HANFTEK_UMT_010_WARM			0x0015
+#define USB_PID_DTT200U_COLD				0x0201
+#define USB_PID_DTT200U_WARM				0x0301
+#define USB_PID_WT220U_ZAP250_COLD			0x0220
+#define USB_PID_WT220U_COLD				0x0222
+#define USB_PID_WT220U_WARM				0x0221
+#define USB_PID_WT220U_FC_COLD				0x0225
+#define USB_PID_WT220U_FC_WARM				0x0226
+#define USB_PID_WT220U_ZL0353_COLD			0x022a
+#define USB_PID_WT220U_ZL0353_WARM			0x022b
+#define USB_PID_WINTV_NOVA_T_USB2_COLD			0x9300
+#define USB_PID_WINTV_NOVA_T_USB2_WARM			0x9301
+#define USB_PID_HAUPPAUGE_NOVA_T_500			0x9941
+#define USB_PID_HAUPPAUGE_NOVA_T_500_2			0x9950
+#define USB_PID_HAUPPAUGE_NOVA_T_500_3			0x8400
+#define USB_PID_HAUPPAUGE_NOVA_T_STICK			0x7050
+#define USB_PID_HAUPPAUGE_NOVA_T_STICK_2		0x7060
+#define USB_PID_HAUPPAUGE_NOVA_T_STICK_3		0x7070
+#define USB_PID_HAUPPAUGE_MYTV_T			0x7080
+#define USB_PID_HAUPPAUGE_NOVA_TD_STICK			0x9580
+#define USB_PID_HAUPPAUGE_NOVA_TD_STICK_52009		0x5200
+#define USB_PID_HAUPPAUGE_TIGER_ATSC			0xb200
+#define USB_PID_HAUPPAUGE_TIGER_ATSC_B210		0xb210
+#define USB_PID_AVERMEDIA_EXPRESS			0xb568
+#define USB_PID_AVERMEDIA_VOLAR				0xa807
+#define USB_PID_AVERMEDIA_VOLAR_2			0xb808
+#define USB_PID_AVERMEDIA_VOLAR_A868R			0xa868
+#define USB_PID_AVERMEDIA_MCE_USB_M038			0x1228
+#define USB_PID_AVERMEDIA_HYBRID_ULTRA_USB_M039R	0x0039
+#define USB_PID_AVERMEDIA_HYBRID_ULTRA_USB_M039R_ATSC	0x1039
+#define USB_PID_AVERMEDIA_HYBRID_ULTRA_USB_M039R_DVBT	0x2039
+#define USB_PID_AVERMEDIA_VOLAR_X			0xa815
+#define USB_PID_AVERMEDIA_VOLAR_X_2			0x8150
+#define USB_PID_AVERMEDIA_A309				0xa309
+#define USB_PID_AVERMEDIA_A310				0xa310
+#define USB_PID_AVERMEDIA_A850				0x850a
+#define USB_PID_AVERMEDIA_A850T				0x850b
+#define USB_PID_AVERMEDIA_A805				0xa805
+#define USB_PID_AVERMEDIA_A815M				0x815a
+#define USB_PID_AVERMEDIA_A835				0xa835
+#define USB_PID_AVERMEDIA_B835				0xb835
+#define USB_PID_AVERMEDIA_A835B_1835			0x1835
+#define USB_PID_AVERMEDIA_A835B_2835			0x2835
+#define USB_PID_AVERMEDIA_A835B_3835			0x3835
+#define USB_PID_AVERMEDIA_A835B_4835			0x4835
+#define USB_PID_AVERMEDIA_1867				0x1867
+#define USB_PID_AVERMEDIA_A867				0xa867
+#define USB_PID_AVERMEDIA_H335				0x0335
+#define USB_PID_AVERMEDIA_TD110				0xa110
+#define USB_PID_AVERMEDIA_TWINSTAR			0x0825
+#define USB_PID_TECHNOTREND_CONNECT_S2400               0x3006
+#define USB_PID_TECHNOTREND_CONNECT_S2400_8KEEPROM	0x3009
+#define USB_PID_TECHNOTREND_CONNECT_CT3650		0x300d
+#define USB_PID_TECHNOTREND_CONNECT_S2_4600             0x3011
+#define USB_PID_TECHNOTREND_CONNECT_CT2_4650_CI		0x3012
+#define USB_PID_TECHNOTREND_CONNECT_CT2_4650_CI_2	0x3015
+#define USB_PID_TECHNOTREND_TVSTICK_CT2_4400		0x3014
+#define USB_PID_TECHNOTREND_CONNECT_S2_4650_CI		0x3017
+#define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY	0x005a
+#define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY_2	0x0081
+#define USB_PID_TERRATEC_CINERGY_HT_USB_XE		0x0058
+#define USB_PID_TERRATEC_CINERGY_HT_EXPRESS		0x0060
+#define USB_PID_TERRATEC_CINERGY_T_EXPRESS		0x0062
+#define USB_PID_TERRATEC_CINERGY_T_XXS			0x0078
+#define USB_PID_TERRATEC_CINERGY_T_XXS_2		0x00ab
+#define USB_PID_TERRATEC_CINERGY_S2_R1			0x00a8
+#define USB_PID_TERRATEC_CINERGY_S2_R2			0x00b0
+#define USB_PID_TERRATEC_CINERGY_S2_R3			0x0102
+#define USB_PID_TERRATEC_CINERGY_S2_R4			0x0105
+#define USB_PID_TERRATEC_H7				0x10b4
+#define USB_PID_TERRATEC_H7_2				0x10a3
+#define USB_PID_TERRATEC_H7_3				0x10a5
+#define USB_PID_TERRATEC_T1				0x10ae
+#define USB_PID_TERRATEC_T3				0x10a0
+#define USB_PID_TERRATEC_T5				0x10a1
+#define USB_PID_NOXON_DAB_STICK				0x00b3
+#define USB_PID_NOXON_DAB_STICK_REV2			0x00e0
+#define USB_PID_NOXON_DAB_STICK_REV3			0x00b4
+#define USB_PID_PINNACLE_EXPRESSCARD_320CX		0x022e
+#define USB_PID_PINNACLE_PCTV2000E			0x022c
+#define USB_PID_PINNACLE_PCTV_DVB_T_FLASH		0x0228
+#define USB_PID_PINNACLE_PCTV_DUAL_DIVERSITY_DVB_T	0x0229
+#define USB_PID_PINNACLE_PCTV71E			0x022b
+#define USB_PID_PINNACLE_PCTV72E			0x0236
+#define USB_PID_PINNACLE_PCTV73E			0x0237
+#define USB_PID_PINNACLE_PCTV310E			0x3211
+#define USB_PID_PINNACLE_PCTV801E			0x023a
+#define USB_PID_PINNACLE_PCTV801E_SE			0x023b
+#define USB_PID_PINNACLE_PCTV340E			0x023d
+#define USB_PID_PINNACLE_PCTV340E_SE			0x023e
+#define USB_PID_PINNACLE_PCTV73A			0x0243
+#define USB_PID_PINNACLE_PCTV73ESE			0x0245
+#define USB_PID_PINNACLE_PCTV74E			0x0246
+#define USB_PID_PINNACLE_PCTV282E			0x0248
+#define USB_PID_PIXELVIEW_SBTVD				0x5010
+#define USB_PID_PCTV_200E				0x020e
+#define USB_PID_PCTV_400E				0x020f
+#define USB_PID_PCTV_450E				0x0222
+#define USB_PID_PCTV_452E				0x021f
+#define USB_PID_PCTV_78E				0x025a
+#define USB_PID_PCTV_79E				0x0262
+#define USB_PID_REALTEK_RTL2831U			0x2831
+#define USB_PID_REALTEK_RTL2832U			0x2832
+#define USB_PID_TECHNOTREND_CONNECT_S2_3600		0x3007
+#define USB_PID_TECHNOTREND_CONNECT_S2_3650_CI		0x300a
+#define USB_PID_NEBULA_DIGITV				0x0201
+#define USB_PID_DVICO_BLUEBIRD_LGDT			0xd820
+#define USB_PID_DVICO_BLUEBIRD_LG064F_COLD		0xd500
+#define USB_PID_DVICO_BLUEBIRD_LG064F_WARM		0xd501
+#define USB_PID_DVICO_BLUEBIRD_LGZ201_COLD		0xdb00
+#define USB_PID_DVICO_BLUEBIRD_LGZ201_WARM		0xdb01
+#define USB_PID_DVICO_BLUEBIRD_TH7579_COLD		0xdb10
+#define USB_PID_DVICO_BLUEBIRD_TH7579_WARM		0xdb11
+#define USB_PID_DVICO_BLUEBIRD_DUAL_1_COLD		0xdb50
+#define USB_PID_DVICO_BLUEBIRD_DUAL_1_WARM		0xdb51
+#define USB_PID_DVICO_BLUEBIRD_DUAL_2_COLD		0xdb58
+#define USB_PID_DVICO_BLUEBIRD_DUAL_2_WARM		0xdb59
+#define USB_PID_DVICO_BLUEBIRD_DUAL_4			0xdb78
+#define USB_PID_DVICO_BLUEBIRD_DUAL_4_REV_2		0xdb98
+#define USB_PID_DVICO_BLUEBIRD_DVB_T_NANO_2		0xdb70
+#define USB_PID_DVICO_BLUEBIRD_DVB_T_NANO_2_NFW_WARM	0xdb71
+#define USB_PID_DIGITALNOW_BLUEBIRD_DUAL_1_COLD		0xdb54
+#define USB_PID_DIGITALNOW_BLUEBIRD_DUAL_1_WARM		0xdb55
+#define USB_PID_MEDION_MD95700				0x0932
+#define USB_PID_MSI_MEGASKY580				0x5580
+#define USB_PID_MSI_MEGASKY580_55801			0x5581
+#define USB_PID_KYE_DVB_T_COLD				0x701e
+#define USB_PID_KYE_DVB_T_WARM				0x701f
+#define USB_PID_LITEON_DVB_T_COLD			0xf000
+#define USB_PID_LITEON_DVB_T_WARM			0xf001
+#define USB_PID_DIGIVOX_MINI_SL_COLD			0xe360
+#define USB_PID_DIGIVOX_MINI_SL_WARM			0xe361
+#define USB_PID_GRANDTEC_DVBT_USB2_COLD			0x0bc6
+#define USB_PID_GRANDTEC_DVBT_USB2_WARM			0x0bc7
+#define USB_PID_WINFAST_DTV2000DS			0x6a04
+#define USB_PID_WINFAST_DTV2000DS_PLUS			0x6f12
+#define USB_PID_WINFAST_DTV_DONGLE_COLD			0x6025
+#define USB_PID_WINFAST_DTV_DONGLE_WARM			0x6026
+#define USB_PID_WINFAST_DTV_DONGLE_STK7700P		0x6f00
+#define USB_PID_WINFAST_DTV_DONGLE_H			0x60f6
+#define USB_PID_WINFAST_DTV_DONGLE_STK7700P_2		0x6f01
+#define USB_PID_WINFAST_DTV_DONGLE_GOLD			0x6029
+#define USB_PID_WINFAST_DTV_DONGLE_MINID		0x6f0f
+#define USB_PID_GENPIX_8PSK_REV_1_COLD			0x0200
+#define USB_PID_GENPIX_8PSK_REV_1_WARM			0x0201
+#define USB_PID_GENPIX_8PSK_REV_2			0x0202
+#define USB_PID_GENPIX_SKYWALKER_1			0x0203
+#define USB_PID_GENPIX_SKYWALKER_CW3K			0x0204
+#define USB_PID_GENPIX_SKYWALKER_2			0x0206
+#define USB_PID_SIGMATEK_DVB_110			0x6610
+#define USB_PID_MSI_DIGI_VOX_MINI_II			0x1513
+#define USB_PID_MSI_DIGIVOX_DUO				0x8801
+#define USB_PID_OPERA1_COLD				0x2830
+#define USB_PID_OPERA1_WARM				0x3829
+#define USB_PID_LIFEVIEW_TV_WALKER_TWIN_COLD		0x0514
+#define USB_PID_LIFEVIEW_TV_WALKER_TWIN_WARM		0x0513
+#define USB_PID_GIGABYTE_U7000				0x7001
+#define USB_PID_GIGABYTE_U8000				0x7002
+#define USB_PID_ASUS_U3000				0x171f
+#define USB_PID_ASUS_U3000H				0x1736
+#define USB_PID_ASUS_U3100				0x173f
+#define USB_PID_ASUS_U3100MINI_PLUS			0x1779
+#define USB_PID_YUAN_EC372S				0x1edc
+#define USB_PID_YUAN_STK7700PH				0x1f08
+#define USB_PID_YUAN_PD378S				0x2edc
+#define USB_PID_YUAN_MC770				0x0871
+#define USB_PID_YUAN_STK7700D				0x1efc
+#define USB_PID_YUAN_STK7700D_2				0x1e8c
+#define USB_PID_DW2102					0x2102
+#define USB_PID_DW2104					0x2104
+#define USB_PID_DW3101					0x3101
+#define USB_PID_XTENSIONS_XD_380			0x0381
+#define USB_PID_TELESTAR_STARSTICK_2			0x8000
+#define USB_PID_MSI_DIGI_VOX_MINI_III                   0x8807
+#define USB_PID_SONY_PLAYTV				0x0003
+#define USB_PID_MYGICA_D689				0xd811
+#define USB_PID_MYGICA_T230				0xc688
+#define USB_PID_MYGICA_T230C				0xc689
+#define USB_PID_ELGATO_EYETV_DIVERSITY			0x0011
+#define USB_PID_ELGATO_EYETV_DTT			0x0021
+#define USB_PID_ELGATO_EYETV_DTT_2			0x003f
+#define USB_PID_ELGATO_EYETV_DTT_Dlx			0x0020
+#define USB_PID_ELGATO_EYETV_SAT			0x002a
+#define USB_PID_ELGATO_EYETV_SAT_V2			0x0025
+#define USB_PID_ELGATO_EYETV_SAT_V3			0x0036
+#define USB_PID_DVB_T_USB_STICK_HIGH_SPEED_COLD		0x5000
+#define USB_PID_DVB_T_USB_STICK_HIGH_SPEED_WARM		0x5001
+#define USB_PID_FRIIO_WHITE				0x0001
+#define USB_PID_TVWAY_PLUS				0x0002
+#define USB_PID_SVEON_STV20				0xe39d
+#define USB_PID_SVEON_STV20_RTL2832U			0xd39d
+#define USB_PID_SVEON_STV21				0xd3b0
+#define USB_PID_SVEON_STV22				0xe401
+#define USB_PID_SVEON_STV22_IT9137			0xe411
+#define USB_PID_AZUREWAVE_AZ6027			0x3275
+#define USB_PID_TERRATEC_DVBS2CI_V1			0x10a4
+#define USB_PID_TERRATEC_DVBS2CI_V2			0x10ac
+#define USB_PID_TECHNISAT_USB2_HDCI_V1			0x0001
+#define USB_PID_TECHNISAT_USB2_HDCI_V2			0x0002
+#define USB_PID_TECHNISAT_USB2_CABLESTAR_HDCI		0x0003
+#define USB_PID_TECHNISAT_AIRSTAR_TELESTICK_2		0x0004
+#define USB_PID_TECHNISAT_USB2_DVB_S2			0x0500
+#define USB_PID_CPYTO_REDI_PC50A			0xa803
+#define USB_PID_CTVDIGDUAL_V2				0xe410
+#define USB_PID_PCTV_2002E                              0x025c
+#define USB_PID_PCTV_2002E_SE                           0x025d
+#define USB_PID_SVEON_STV27                             0xd3af
+#define USB_PID_TURBOX_DTT_2000                         0xd3a4
+#define USB_PID_WINTV_SOLOHD                            0x0264
+#define USB_PID_EVOLVEO_XTRATV_STICK			0xa115
+#define USB_PID_HAMA_DVBT_HYBRID			0x2758
+#define USB_PID_XBOX_ONE_TUNER                          0x02d5
+#endif
diff --git a/include/media/dvb_ca_en50221.h b/include/media/dvb_ca_en50221.h
new file mode 100644
index 000000000000..a1c014b0a837
--- /dev/null
+++ b/include/media/dvb_ca_en50221.h
@@ -0,0 +1,142 @@
+/*
+ * dvb_ca.h: generic DVB functions for EN50221 CA interfaces
+ *
+ * Copyright (C) 2004 Andrew de Quincey
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DVB_CA_EN50221_H_
+#define _DVB_CA_EN50221_H_
+
+#include <linux/list.h>
+#include <linux/dvb/ca.h>
+
+#include <media/dvbdev.h>
+
+#define DVB_CA_EN50221_POLL_CAM_PRESENT	1
+#define DVB_CA_EN50221_POLL_CAM_CHANGED	2
+#define DVB_CA_EN50221_POLL_CAM_READY		4
+
+#define DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE	1
+#define DVB_CA_EN50221_FLAG_IRQ_FR		2
+#define DVB_CA_EN50221_FLAG_IRQ_DA		4
+
+#define DVB_CA_EN50221_CAMCHANGE_REMOVED		0
+#define DVB_CA_EN50221_CAMCHANGE_INSERTED		1
+
+/**
+ * struct dvb_ca_en50221- Structure describing a CA interface
+ *
+ * @owner:		the module owning this structure
+ * @read_attribute_mem:	function for reading attribute memory on the CAM
+ * @write_attribute_mem: function for writing attribute memory on the CAM
+ * @read_cam_control:	function for reading the control interface on the CAM
+ * @write_cam_control:	function for reading the control interface on the CAM
+ * @read_data:		function for reading data (block mode)
+ * @write_data:		function for writing data (block mode)
+ * @slot_reset:		function to reset the CAM slot
+ * @slot_shutdown:	function to shutdown a CAM slot
+ * @slot_ts_enable:	function to enable the Transport Stream on a CAM slot
+ * @poll_slot_status:	function to poll slot status. Only necessary if
+ *			DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set.
+ * @data:		private data, used by caller.
+ * @private:		Opaque data used by the dvb_ca core. Do not modify!
+ *
+ * NOTE: the read_*, write_* and poll_slot_status functions will be
+ * called for different slots concurrently and need to use locks where
+ * and if appropriate. There will be no concurrent access to one slot.
+ */
+struct dvb_ca_en50221 {
+	struct module *owner;
+
+	int (*read_attribute_mem)(struct dvb_ca_en50221 *ca,
+				  int slot, int address);
+	int (*write_attribute_mem)(struct dvb_ca_en50221 *ca,
+				   int slot, int address, u8 value);
+
+	int (*read_cam_control)(struct dvb_ca_en50221 *ca,
+				int slot, u8 address);
+	int (*write_cam_control)(struct dvb_ca_en50221 *ca,
+				 int slot, u8 address, u8 value);
+
+	int (*read_data)(struct dvb_ca_en50221 *ca,
+			 int slot, u8 *ebuf, int ecount);
+	int (*write_data)(struct dvb_ca_en50221 *ca,
+			  int slot, u8 *ebuf, int ecount);
+
+	int (*slot_reset)(struct dvb_ca_en50221 *ca, int slot);
+	int (*slot_shutdown)(struct dvb_ca_en50221 *ca, int slot);
+	int (*slot_ts_enable)(struct dvb_ca_en50221 *ca, int slot);
+
+	int (*poll_slot_status)(struct dvb_ca_en50221 *ca, int slot, int open);
+
+	void *data;
+
+	void *private;
+};
+
+/*
+ * Functions for reporting IRQ events
+ */
+
+/**
+ * dvb_ca_en50221_camchange_irq - A CAMCHANGE IRQ has occurred.
+ *
+ * @pubca: CA instance.
+ * @slot: Slot concerned.
+ * @change_type: One of the DVB_CA_CAMCHANGE_* values
+ */
+void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221 *pubca, int slot,
+				  int change_type);
+
+/**
+ * dvb_ca_en50221_camready_irq - A CAMREADY IRQ has occurred.
+ *
+ * @pubca: CA instance.
+ * @slot: Slot concerned.
+ */
+void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221 *pubca, int slot);
+
+/**
+ * dvb_ca_en50221_frda_irq - An FR or a DA IRQ has occurred.
+ *
+ * @ca: CA instance.
+ * @slot: Slot concerned.
+ */
+void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221 *ca, int slot);
+
+/*
+ * Initialisation/shutdown functions
+ */
+
+/**
+ * dvb_ca_en50221_init - Initialise a new DVB CA device.
+ *
+ * @dvb_adapter: DVB adapter to attach the new CA device to.
+ * @ca: The dvb_ca instance.
+ * @flags: Flags describing the CA device (DVB_CA_EN50221_FLAG_*).
+ * @slot_count: Number of slots supported.
+ *
+ * @return 0 on success, nonzero on failure
+ */
+int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter,
+			struct dvb_ca_en50221 *ca, int flags,
+			       int slot_count);
+
+/**
+ * dvb_ca_en50221_release - Release a DVB CA device.
+ *
+ * @ca: The associated dvb_ca instance.
+ */
+void dvb_ca_en50221_release(struct dvb_ca_en50221 *ca);
+
+#endif
diff --git a/include/media/dvb_demux.h b/include/media/dvb_demux.h
new file mode 100644
index 000000000000..b07092038f4b
--- /dev/null
+++ b/include/media/dvb_demux.h
@@ -0,0 +1,350 @@
+/*
+ * dvb_demux.h: DVB kernel demux API
+ *
+ * Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
+ *                         for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _DVB_DEMUX_H_
+#define _DVB_DEMUX_H_
+
+#include <linux/time.h>
+#include <linux/timer.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+
+#include <media/demux.h>
+
+/**
+ * enum dvb_dmx_filter_type - type of demux feed.
+ *
+ * @DMX_TYPE_TS:	feed is in TS mode.
+ * @DMX_TYPE_SEC:	feed is in Section mode.
+ */
+enum dvb_dmx_filter_type {
+	DMX_TYPE_TS,
+	DMX_TYPE_SEC,
+};
+
+/**
+ * enum dvb_dmx_state - state machine for a demux filter.
+ *
+ * @DMX_STATE_FREE:		indicates that the filter is freed.
+ * @DMX_STATE_ALLOCATED:	indicates that the filter was allocated
+ *				to be used.
+ * @DMX_STATE_READY:		indicates that the filter is ready
+ *				to be used.
+ * @DMX_STATE_GO:		indicates that the filter is running.
+ */
+enum dvb_dmx_state {
+	DMX_STATE_FREE,
+	DMX_STATE_ALLOCATED,
+	DMX_STATE_READY,
+	DMX_STATE_GO,
+};
+
+#define DVB_DEMUX_MASK_MAX 18
+
+#define MAX_PID 0x1fff
+
+#define SPEED_PKTS_INTERVAL 50000
+
+/**
+ * struct dvb_demux_filter - Describes a DVB demux section filter.
+ *
+ * @filter:		Section filter as defined by &struct dmx_section_filter.
+ * @maskandmode:	logical ``and`` bit mask.
+ * @maskandnotmode:	logical ``and not`` bit mask.
+ * @doneq:		flag that indicates when a filter is ready.
+ * @next:		pointer to the next section filter.
+ * @feed:		&struct dvb_demux_feed pointer.
+ * @index:		index of the used demux filter.
+ * @state:		state of the filter as described by &enum dvb_dmx_state.
+ * @type:		type of the filter as described
+ *			by &enum dvb_dmx_filter_type.
+ */
+
+struct dvb_demux_filter {
+	struct dmx_section_filter filter;
+	u8 maskandmode[DMX_MAX_FILTER_SIZE];
+	u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
+	bool doneq;
+
+	struct dvb_demux_filter *next;
+	struct dvb_demux_feed *feed;
+	int index;
+	enum dvb_dmx_state state;
+	enum dvb_dmx_filter_type type;
+
+	/* private: used only by av7110 */
+	u16 hw_handle;
+};
+
+/**
+ * struct dvb_demux_feed - describes a DVB field
+ *
+ * @feed:	a union describing a digital TV feed.
+ *		Depending on the feed type, it can be either
+ *		@feed.ts or @feed.sec.
+ * @feed.ts:	a &struct dmx_ts_feed pointer.
+ *		For TS feed only.
+ * @feed.sec:	a &struct dmx_section_feed pointer.
+ *		For section feed only.
+ * @cb:		a union describing digital TV callbacks.
+ *		Depending on the feed type, it can be either
+ *		@cb.ts or @cb.sec.
+ * @cb.ts:	a dmx_ts_cb() calback function pointer.
+ *		For TS feed only.
+ * @cb.sec:	a dmx_section_cb() callback function pointer.
+ *		For section feed only.
+ * @demux:	pointer to &struct dvb_demux.
+ * @priv:	private data that can optionally be used by a DVB driver.
+ * @type:	type of the filter, as defined by &enum dvb_dmx_filter_type.
+ * @state:	state of the filter as defined by &enum dvb_dmx_state.
+ * @pid:	PID to be filtered.
+ * @timeout:	feed timeout.
+ * @filter:	pointer to &struct dvb_demux_filter.
+ * @ts_type:	type of TS, as defined by &enum ts_filter_type.
+ * @pes_type:	type of PES, as defined by &enum dmx_ts_pes.
+ * @cc:		MPEG-TS packet continuity counter
+ * @pusi_seen:	if true, indicates that a discontinuity was detected.
+ *		it is used to prevent feeding of garbage from previous section.
+ * @peslen:	length of the PES (Packet Elementary Stream).
+ * @list_head:	head for the list of digital TV demux feeds.
+ * @index:	a unique index for each feed. Can be used as hardware
+ *		pid filter index.
+ */
+struct dvb_demux_feed {
+	union {
+		struct dmx_ts_feed ts;
+		struct dmx_section_feed sec;
+	} feed;
+
+	union {
+		dmx_ts_cb ts;
+		dmx_section_cb sec;
+	} cb;
+
+	struct dvb_demux *demux;
+	void *priv;
+	enum dvb_dmx_filter_type type;
+	enum dvb_dmx_state state;
+	u16 pid;
+
+	ktime_t timeout;
+	struct dvb_demux_filter *filter;
+
+	enum ts_filter_type ts_type;
+	enum dmx_ts_pes pes_type;
+
+	int cc;
+	bool pusi_seen;
+
+	u16 peslen;
+
+	struct list_head list_head;
+	unsigned int index;
+};
+
+/**
+ * struct dvb_demux - represents a digital TV demux
+ * @dmx:		embedded &struct dmx_demux with demux capabilities
+ *			and callbacks.
+ * @priv:		private data that can optionally be used by
+ *			a DVB driver.
+ * @filternum:		maximum amount of DVB filters.
+ * @feednum:		maximum amount of DVB feeds.
+ * @start_feed:		callback routine to be called in order to start
+ *			a DVB feed.
+ * @stop_feed:		callback routine to be called in order to stop
+ *			a DVB feed.
+ * @write_to_decoder:	callback routine to be called if the feed is TS and
+ *			it is routed to an A/V decoder, when a new TS packet
+ *			is received.
+ *			Used only on av7110-av.c.
+ * @check_crc32:	callback routine to check CRC. If not initialized,
+ *			dvb_demux will use an internal one.
+ * @memcopy:		callback routine to memcopy received data.
+ *			If not initialized, dvb_demux will default to memcpy().
+ * @users:		counter for the number of demux opened file descriptors.
+ *			Currently, it is limited to 10 users.
+ * @filter:		pointer to &struct dvb_demux_filter.
+ * @feed:		pointer to &struct dvb_demux_feed.
+ * @frontend_list:	&struct list_head with frontends used by the demux.
+ * @pesfilter:		array of &struct dvb_demux_feed with the PES types
+ *			that will be filtered.
+ * @pids:		list of filtered program IDs.
+ * @feed_list:		&struct list_head with feeds.
+ * @tsbuf:		temporary buffer used internally to store TS packets.
+ * @tsbufp:		temporary buffer index used internally.
+ * @mutex:		pointer to &struct mutex used to protect feed set
+ *			logic.
+ * @lock:		pointer to &spinlock_t, used to protect buffer handling.
+ * @cnt_storage:	buffer used for TS/TEI continuity check.
+ * @speed_last_time:	&ktime_t used for TS speed check.
+ * @speed_pkts_cnt:	packets count used for TS speed check.
+ */
+struct dvb_demux {
+	struct dmx_demux dmx;
+	void *priv;
+	int filternum;
+	int feednum;
+	int (*start_feed)(struct dvb_demux_feed *feed);
+	int (*stop_feed)(struct dvb_demux_feed *feed);
+	int (*write_to_decoder)(struct dvb_demux_feed *feed,
+				 const u8 *buf, size_t len);
+	u32 (*check_crc32)(struct dvb_demux_feed *feed,
+			    const u8 *buf, size_t len);
+	void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
+			 const u8 *src, size_t len);
+
+	int users;
+#define MAX_DVB_DEMUX_USERS 10
+	struct dvb_demux_filter *filter;
+	struct dvb_demux_feed *feed;
+
+	struct list_head frontend_list;
+
+	struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
+	u16 pids[DMX_PES_OTHER];
+
+#define DMX_MAX_PID 0x2000
+	struct list_head feed_list;
+	u8 tsbuf[204];
+	int tsbufp;
+
+	struct mutex mutex;
+	spinlock_t lock;
+
+	uint8_t *cnt_storage; /* for TS continuity check */
+
+	ktime_t speed_last_time; /* for TS speed check */
+	uint32_t speed_pkts_cnt; /* for TS speed check */
+
+	/* private: used only on av7110 */
+	int playing;
+	int recording;
+};
+
+/**
+ * dvb_dmx_init - initialize a digital TV demux struct.
+ *
+ * @demux: &struct dvb_demux to be initialized.
+ *
+ * Before being able to register a digital TV demux struct, drivers
+ * should call this routine. On its typical usage, some fields should
+ * be initialized at the driver before calling it.
+ *
+ * A typical usecase is::
+ *
+ *	dvb->demux.dmx.capabilities =
+ *		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
+ *		DMX_MEMORY_BASED_FILTERING;
+ *	dvb->demux.priv       = dvb;
+ *	dvb->demux.filternum  = 256;
+ *	dvb->demux.feednum    = 256;
+ *	dvb->demux.start_feed = driver_start_feed;
+ *	dvb->demux.stop_feed  = driver_stop_feed;
+ *	ret = dvb_dmx_init(&dvb->demux);
+ *	if (ret < 0)
+ *		return ret;
+ */
+int dvb_dmx_init(struct dvb_demux *demux);
+
+/**
+ * dvb_dmx_release - releases a digital TV demux internal buffers.
+ *
+ * @demux: &struct dvb_demux to be released.
+ *
+ * The DVB core internally allocates data at @demux. This routine
+ * releases those data. Please notice that the struct itelf is not
+ * released, as it can be embedded on other structs.
+ */
+void dvb_dmx_release(struct dvb_demux *demux);
+
+/**
+ * dvb_dmx_swfilter_packets - use dvb software filter for a buffer with
+ *	multiple MPEG-TS packets with 188 bytes each.
+ *
+ * @demux: pointer to &struct dvb_demux
+ * @buf: buffer with data to be filtered
+ * @count: number of MPEG-TS packets with size of 188.
+ *
+ * The routine will discard a DVB packet that don't start with 0x47.
+ *
+ * Use this routine if the DVB demux fills MPEG-TS buffers that are
+ * already aligned.
+ *
+ * NOTE: The @buf size should have size equal to ``count * 188``.
+ */
+void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf,
+			      size_t count);
+
+/**
+ * dvb_dmx_swfilter -  use dvb software filter for a buffer with
+ *	multiple MPEG-TS packets with 188 bytes each.
+ *
+ * @demux: pointer to &struct dvb_demux
+ * @buf: buffer with data to be filtered
+ * @count: number of MPEG-TS packets with size of 188.
+ *
+ * If a DVB packet doesn't start with 0x47, it will seek for the first
+ * byte that starts with 0x47.
+ *
+ * Use this routine if the DVB demux fill buffers that may not start with
+ * a packet start mark (0x47).
+ *
+ * NOTE: The @buf size should have size equal to ``count * 188``.
+ */
+void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
+
+/**
+ * dvb_dmx_swfilter_204 -  use dvb software filter for a buffer with
+ *	multiple MPEG-TS packets with 204 bytes each.
+ *
+ * @demux: pointer to &struct dvb_demux
+ * @buf: buffer with data to be filtered
+ * @count: number of MPEG-TS packets with size of 204.
+ *
+ * If a DVB packet doesn't start with 0x47, it will seek for the first
+ * byte that starts with 0x47.
+ *
+ * Use this routine if the DVB demux fill buffers that may not start with
+ * a packet start mark (0x47).
+ *
+ * NOTE: The @buf size should have size equal to ``count * 204``.
+ */
+void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
+			  size_t count);
+
+/**
+ * dvb_dmx_swfilter_raw -  make the raw data available to userspace without
+ *	filtering
+ *
+ * @demux: pointer to &struct dvb_demux
+ * @buf: buffer with data
+ * @count: number of packets to be passed. The actual size of each packet
+ *	depends on the &dvb_demux->feed->cb.ts logic.
+ *
+ * Use it if the driver needs to deliver the raw payload to userspace without
+ * passing through the kernel demux. That is meant to support some
+ * delivery systems that aren't based on MPEG-TS.
+ *
+ * This function relies on &dvb_demux->feed->cb.ts to actually handle the
+ * buffer.
+ */
+void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
+			  size_t count);
+
+#endif /* _DVB_DEMUX_H_ */
diff --git a/include/media/dvb_frontend.h b/include/media/dvb_frontend.h
new file mode 100644
index 000000000000..331c8269c00e
--- /dev/null
+++ b/include/media/dvb_frontend.h
@@ -0,0 +1,795 @@
+/*
+ * dvb_frontend.h
+ *
+ * The Digital TV Frontend kABI defines a driver-internal interface for
+ * registering low-level, hardware specific driver to a hardware independent
+ * frontend layer.
+ *
+ * Copyright (C) 2001 convergence integrated media GmbH
+ * Copyright (C) 2004 convergence GmbH
+ *
+ * Written by Ralph Metzler
+ * Overhauled by Holger Waechtler
+ * Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#ifndef _DVB_FRONTEND_H_
+#define _DVB_FRONTEND_H_
+
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/ioctl.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include <linux/dvb/frontend.h>
+
+#include <media/dvbdev.h>
+
+/*
+ * Maximum number of Delivery systems per frontend. It
+ * should be smaller or equal to 32
+ */
+#define MAX_DELSYS	8
+
+/**
+ * struct dvb_frontend_tune_settings - parameters to adjust frontend tuning
+ *
+ * @min_delay_ms:	minimum delay for tuning, in ms
+ * @step_size:		step size between two consecutive frequencies
+ * @max_drift:		maximum drift
+ *
+ * NOTE: step_size is in Hz, for terrestrial/cable or kHz for satellite
+ */
+struct dvb_frontend_tune_settings {
+	int min_delay_ms;
+	int step_size;
+	int max_drift;
+};
+
+struct dvb_frontend;
+
+/**
+ * struct dvb_tuner_info - Frontend name and min/max ranges/bandwidths
+ *
+ * @name:		name of the Frontend
+ * @frequency_min:	minimal frequency supported
+ * @frequency_max:	maximum frequency supported
+ * @frequency_step:	frequency step
+ * @bandwidth_min:	minimal frontend bandwidth supported
+ * @bandwidth_max:	maximum frontend bandwidth supported
+ * @bandwidth_step:	frontend bandwidth step
+ *
+ * NOTE: frequency parameters are in Hz, for terrestrial/cable or kHz for
+ * satellite.
+ */
+struct dvb_tuner_info {
+	char name[128];
+
+	u32 frequency_min;
+	u32 frequency_max;
+	u32 frequency_step;
+
+	u32 bandwidth_min;
+	u32 bandwidth_max;
+	u32 bandwidth_step;
+};
+
+/**
+ * struct analog_parameters - Parameters to tune into an analog/radio channel
+ *
+ * @frequency:	Frequency used by analog TV tuner (either in 62.5 kHz step,
+ *		for TV, or 62.5 Hz for radio)
+ * @mode:	Tuner mode, as defined on enum v4l2_tuner_type
+ * @audmode:	Audio mode as defined for the rxsubchans field at videodev2.h,
+ *		e. g. V4L2_TUNER_MODE_*
+ * @std:	TV standard bitmap as defined at videodev2.h, e. g. V4L2_STD_*
+ *
+ * Hybrid tuners should be supported by both V4L2 and DVB APIs. This
+ * struct contains the data that are used by the V4L2 side. To avoid
+ * dependencies from V4L2 headers, all enums here are declared as integers.
+ */
+struct analog_parameters {
+	unsigned int frequency;
+	unsigned int mode;
+	unsigned int audmode;
+	u64 std;
+};
+
+/**
+ * enum dvbfe_algo - defines the algorithm used to tune into a channel
+ *
+ * @DVBFE_ALGO_HW: Hardware Algorithm -
+ *	Devices that support this algorithm do everything in hardware
+ *	and no software support is needed to handle them.
+ *	Requesting these devices to LOCK is the only thing required,
+ *	device is supposed to do everything in the hardware.
+ *
+ * @DVBFE_ALGO_SW: Software Algorithm -
+ * These are dumb devices, that require software to do everything
+ *
+ * @DVBFE_ALGO_CUSTOM: Customizable Agorithm -
+ *	Devices having this algorithm can be customized to have specific
+ *	algorithms in the frontend driver, rather than simply doing a
+ *	software zig-zag. In this case the zigzag maybe hardware assisted
+ *	or it maybe completely done in hardware. In all cases, usage of
+ *	this algorithm, in conjunction with the search and track
+ *	callbacks, utilizes the driver specific algorithm.
+ *
+ * @DVBFE_ALGO_RECOVERY: Recovery Algorithm -
+ *	These devices have AUTO recovery capabilities from LOCK failure
+ */
+enum dvbfe_algo {
+	DVBFE_ALGO_HW			= (1 <<  0),
+	DVBFE_ALGO_SW			= (1 <<  1),
+	DVBFE_ALGO_CUSTOM		= (1 <<  2),
+	DVBFE_ALGO_RECOVERY		= (1 << 31)
+};
+
+/**
+ * enum dvbfe_search - search callback possible return status
+ *
+ * @DVBFE_ALGO_SEARCH_SUCCESS:
+ *	The frontend search algorithm completed and returned successfully
+ *
+ * @DVBFE_ALGO_SEARCH_ASLEEP:
+ *	The frontend search algorithm is sleeping
+ *
+ * @DVBFE_ALGO_SEARCH_FAILED:
+ *	The frontend search for a signal failed
+ *
+ * @DVBFE_ALGO_SEARCH_INVALID:
+ *	The frontend search algorith was probably supplied with invalid
+ *	parameters and the search is an invalid one
+ *
+ * @DVBFE_ALGO_SEARCH_ERROR:
+ *	The frontend search algorithm failed due to some error
+ *
+ * @DVBFE_ALGO_SEARCH_AGAIN:
+ *	The frontend search algorithm was requested to search again
+ */
+enum dvbfe_search {
+	DVBFE_ALGO_SEARCH_SUCCESS	= (1 <<  0),
+	DVBFE_ALGO_SEARCH_ASLEEP	= (1 <<  1),
+	DVBFE_ALGO_SEARCH_FAILED	= (1 <<  2),
+	DVBFE_ALGO_SEARCH_INVALID	= (1 <<  3),
+	DVBFE_ALGO_SEARCH_AGAIN		= (1 <<  4),
+	DVBFE_ALGO_SEARCH_ERROR		= (1 << 31),
+};
+
+/**
+ * struct dvb_tuner_ops - Tuner information and callbacks
+ *
+ * @info:		embedded &struct dvb_tuner_info with tuner properties
+ * @release:		callback function called when frontend is detached.
+ *			drivers should free any allocated memory.
+ * @init:		callback function used to initialize the tuner device.
+ * @sleep:		callback function used to put the tuner to sleep.
+ * @suspend:		callback function used to inform that the Kernel will
+ *			suspend.
+ * @resume:		callback function used to inform that the Kernel is
+ *			resuming from suspend.
+ * @set_params:		callback function used to inform the tuner to tune
+ *			into a digital TV channel. The properties to be used
+ *			are stored at &struct dvb_frontend.dtv_property_cache.
+ *			The tuner demod can change the parameters to reflect
+ *			the changes needed for the channel to be tuned, and
+ *			update statistics. This is the recommended way to set
+ *			the tuner parameters and should be used on newer
+ *			drivers.
+ * @set_analog_params:	callback function used to tune into an analog TV
+ *			channel on hybrid tuners. It passes @analog_parameters
+ *			to the driver.
+ * @set_config:		callback function used to send some tuner-specific
+ *			parameters.
+ * @get_frequency:	get the actual tuned frequency
+ * @get_bandwidth:	get the bandwitdh used by the low pass filters
+ * @get_if_frequency:	get the Intermediate Frequency, in Hz. For baseband,
+ *			should return 0.
+ * @get_status:		returns the frontend lock status
+ * @get_rf_strength:	returns the RF signal strength. Used mostly to support
+ *			analog TV and radio. Digital TV should report, instead,
+ *			via DVBv5 API (&struct dvb_frontend.dtv_property_cache).
+ * @get_afc:		Used only by analog TV core. Reports the frequency
+ *			drift due to AFC.
+ * @calc_regs:		callback function used to pass register data settings
+ *			for simple tuners.  Shouldn't be used on newer drivers.
+ * @set_frequency:	Set a new frequency. Shouldn't be used on newer drivers.
+ * @set_bandwidth:	Set a new frequency. Shouldn't be used on newer drivers.
+ *
+ * NOTE: frequencies used on @get_frequency and @set_frequency are in Hz for
+ * terrestrial/cable or kHz for satellite.
+ *
+ */
+struct dvb_tuner_ops {
+
+	struct dvb_tuner_info info;
+
+	void (*release)(struct dvb_frontend *fe);
+	int (*init)(struct dvb_frontend *fe);
+	int (*sleep)(struct dvb_frontend *fe);
+	int (*suspend)(struct dvb_frontend *fe);
+	int (*resume)(struct dvb_frontend *fe);
+
+	/* This is the recomended way to set the tuner */
+	int (*set_params)(struct dvb_frontend *fe);
+	int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p);
+
+	int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
+
+	int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
+	int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
+	int (*get_if_frequency)(struct dvb_frontend *fe, u32 *frequency);
+
+#define TUNER_STATUS_LOCKED 1
+#define TUNER_STATUS_STEREO 2
+	int (*get_status)(struct dvb_frontend *fe, u32 *status);
+	int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);
+	int (*get_afc)(struct dvb_frontend *fe, s32 *afc);
+
+	/*
+	 * This is support for demods like the mt352 - fills out the supplied
+	 * buffer with what to write.
+	 *
+	 * Don't use on newer drivers.
+	 */
+	int (*calc_regs)(struct dvb_frontend *fe, u8 *buf, int buf_len);
+
+	/*
+	 * These are provided separately from set_params in order to
+	 * facilitate silicon tuners which require sophisticated tuning loops,
+	 * controlling each parameter separately.
+	 *
+	 * Don't use on newer drivers.
+	 */
+	int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
+	int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
+};
+
+/**
+ * struct analog_demod_info - Information struct for analog TV part of the demod
+ *
+ * @name:	Name of the analog TV demodulator
+ */
+struct analog_demod_info {
+	char *name;
+};
+
+/**
+ * struct analog_demod_ops  - Demodulation information and callbacks for
+ *			      analog TV and radio
+ *
+ * @info:		pointer to struct analog_demod_info
+ * @set_params:		callback function used to inform the demod to set the
+ *			demodulator parameters needed to decode an analog or
+ *			radio channel. The properties are passed via
+ *			&struct analog_params.
+ * @has_signal:		returns 0xffff if has signal, or 0 if it doesn't.
+ * @get_afc:		Used only by analog TV core. Reports the frequency
+ *			drift due to AFC.
+ * @tuner_status:	callback function that returns tuner status bits, e. g.
+ *			%TUNER_STATUS_LOCKED and %TUNER_STATUS_STEREO.
+ * @standby:		set the tuner to standby mode.
+ * @release:		callback function called when frontend is detached.
+ *			drivers should free any allocated memory.
+ * @i2c_gate_ctrl:	controls the I2C gate. Newer drivers should use I2C
+ *			mux support instead.
+ * @set_config:		callback function used to send some tuner-specific
+ *			parameters.
+ */
+struct analog_demod_ops {
+
+	struct analog_demod_info info;
+
+	void (*set_params)(struct dvb_frontend *fe,
+			   struct analog_parameters *params);
+	int  (*has_signal)(struct dvb_frontend *fe, u16 *signal);
+	int  (*get_afc)(struct dvb_frontend *fe, s32 *afc);
+	void (*tuner_status)(struct dvb_frontend *fe);
+	void (*standby)(struct dvb_frontend *fe);
+	void (*release)(struct dvb_frontend *fe);
+	int  (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable);
+
+	/** This is to allow setting tuner-specific configuration */
+	int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
+};
+
+struct dtv_frontend_properties;
+
+
+/**
+ * struct dvb_frontend_ops - Demodulation information and callbacks for
+ *			      ditialt TV
+ *
+ * @info:		embedded &struct dvb_tuner_info with tuner properties
+ * @delsys:		Delivery systems supported by the frontend
+ * @detach:		callback function called when frontend is detached.
+ *			drivers should clean up, but not yet free the &struct
+ *			dvb_frontend allocation.
+ * @release:		callback function called when frontend is ready to be
+ *			freed.
+ *			drivers should free any allocated memory.
+ * @release_sec:	callback function requesting that the Satelite Equipment
+ *			Control (SEC) driver to release and free any memory
+ *			allocated by the driver.
+ * @init:		callback function used to initialize the tuner device.
+ * @sleep:		callback function used to put the tuner to sleep.
+ * @write:		callback function used by some demod legacy drivers to
+ *			allow other drivers to write data into their registers.
+ *			Should not be used on new drivers.
+ * @tune:		callback function used by demod drivers that use
+ *			@DVBFE_ALGO_HW to tune into a frequency.
+ * @get_frontend_algo:	returns the desired hardware algorithm.
+ * @set_frontend:	callback function used to inform the demod to set the
+ *			parameters for demodulating a digital TV channel.
+ *			The properties to be used are stored at &struct
+ *			dvb_frontend.dtv_property_cache. The demod can change
+ *			the parameters to reflect the changes needed for the
+ *			channel to be decoded, and update statistics.
+ * @get_tune_settings:	callback function
+ * @get_frontend:	callback function used to inform the parameters
+ *			actuall in use. The properties to be used are stored at
+ *			&struct dvb_frontend.dtv_property_cache and update
+ *			statistics. Please notice that it should not return
+ *			an error code if the statistics are not available
+ *			because the demog is not locked.
+ * @read_status:	returns the locking status of the frontend.
+ * @read_ber:		legacy callback function to return the bit error rate.
+ *			Newer drivers should provide such info via DVBv5 API,
+ *			e. g. @set_frontend;/@get_frontend, implementing this
+ *			callback only if DVBv3 API compatibility is wanted.
+ * @read_signal_strength: legacy callback function to return the signal
+ *			strength. Newer drivers should provide such info via
+ *			DVBv5 API, e. g. @set_frontend/@get_frontend,
+ *			implementing this callback only if DVBv3 API
+ *			compatibility is wanted.
+ * @read_snr:		legacy callback function to return the Signal/Noise
+ *			rate. Newer drivers should provide such info via
+ *			DVBv5 API, e. g. @set_frontend/@get_frontend,
+ *			implementing this callback only if DVBv3 API
+ *			compatibility is wanted.
+ * @read_ucblocks:	legacy callback function to return the Uncorrected Error
+ *			Blocks. Newer drivers should provide such info via
+ *			DVBv5 API, e. g. @set_frontend/@get_frontend,
+ *			implementing this callback only if DVBv3 API
+ *			compatibility is wanted.
+ * @diseqc_reset_overload: callback function to implement the
+ *			FE_DISEQC_RESET_OVERLOAD() ioctl (only Satellite)
+ * @diseqc_send_master_cmd: callback function to implement the
+ *			FE_DISEQC_SEND_MASTER_CMD() ioctl (only Satellite).
+ * @diseqc_recv_slave_reply: callback function to implement the
+ *			FE_DISEQC_RECV_SLAVE_REPLY() ioctl (only Satellite)
+ * @diseqc_send_burst:	callback function to implement the
+ *			FE_DISEQC_SEND_BURST() ioctl (only Satellite).
+ * @set_tone:		callback function to implement the
+ *			FE_SET_TONE() ioctl (only Satellite).
+ * @set_voltage:	callback function to implement the
+ *			FE_SET_VOLTAGE() ioctl (only Satellite).
+ * @enable_high_lnb_voltage: callback function to implement the
+ *			FE_ENABLE_HIGH_LNB_VOLTAGE() ioctl (only Satellite).
+ * @dishnetwork_send_legacy_command: callback function to implement the
+ *			FE_DISHNETWORK_SEND_LEGACY_CMD() ioctl (only Satellite).
+ *			Drivers should not use this, except when the DVB
+ *			core emulation fails to provide proper support (e.g.
+ *			if @set_voltage takes more than 8ms to work), and
+ *			when backward compatibility with this legacy API is
+ *			required.
+ * @i2c_gate_ctrl:	controls the I2C gate. Newer drivers should use I2C
+ *			mux support instead.
+ * @ts_bus_ctrl:	callback function used to take control of the TS bus.
+ * @set_lna:		callback function to power on/off/auto the LNA.
+ * @search:		callback function used on some custom algo search algos.
+ * @tuner_ops:		pointer to &struct dvb_tuner_ops
+ * @analog_ops:		pointer to &struct analog_demod_ops
+ */
+struct dvb_frontend_ops {
+	struct dvb_frontend_info info;
+
+	u8 delsys[MAX_DELSYS];
+
+	void (*detach)(struct dvb_frontend *fe);
+	void (*release)(struct dvb_frontend* fe);
+	void (*release_sec)(struct dvb_frontend* fe);
+
+	int (*init)(struct dvb_frontend* fe);
+	int (*sleep)(struct dvb_frontend* fe);
+
+	int (*write)(struct dvb_frontend* fe, const u8 buf[], int len);
+
+	/* if this is set, it overrides the default swzigzag */
+	int (*tune)(struct dvb_frontend* fe,
+		    bool re_tune,
+		    unsigned int mode_flags,
+		    unsigned int *delay,
+		    enum fe_status *status);
+
+	/* get frontend tuning algorithm from the module */
+	enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe);
+
+	/* these two are only used for the swzigzag code */
+	int (*set_frontend)(struct dvb_frontend *fe);
+	int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
+
+	int (*get_frontend)(struct dvb_frontend *fe,
+			    struct dtv_frontend_properties *props);
+
+	int (*read_status)(struct dvb_frontend *fe, enum fe_status *status);
+	int (*read_ber)(struct dvb_frontend* fe, u32* ber);
+	int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
+	int (*read_snr)(struct dvb_frontend* fe, u16* snr);
+	int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
+
+	int (*diseqc_reset_overload)(struct dvb_frontend* fe);
+	int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
+	int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
+	int (*diseqc_send_burst)(struct dvb_frontend *fe,
+				 enum fe_sec_mini_cmd minicmd);
+	int (*set_tone)(struct dvb_frontend *fe, enum fe_sec_tone_mode tone);
+	int (*set_voltage)(struct dvb_frontend *fe,
+			   enum fe_sec_voltage voltage);
+	int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
+	int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
+	int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
+	int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
+	int (*set_lna)(struct dvb_frontend *);
+
+	/*
+	 * These callbacks are for devices that implement their own
+	 * tuning algorithms, rather than a simple swzigzag
+	 */
+	enum dvbfe_search (*search)(struct dvb_frontend *fe);
+
+	struct dvb_tuner_ops tuner_ops;
+	struct analog_demod_ops analog_ops;
+};
+
+#ifdef __DVB_CORE__
+#define MAX_EVENT 8
+
+/* Used only internally at dvb_frontend.c */
+struct dvb_fe_events {
+	struct dvb_frontend_event events[MAX_EVENT];
+	int			  eventw;
+	int			  eventr;
+	int			  overflow;
+	wait_queue_head_t	  wait_queue;
+	struct mutex		  mtx;
+};
+#endif
+
+/**
+ * struct dtv_frontend_properties - contains a list of properties that are
+ *				    specific to a digital TV standard.
+ *
+ * @frequency:		frequency in Hz for terrestrial/cable or in kHz for
+ *			Satellite
+ * @modulation:		Frontend modulation type
+ * @voltage:		SEC voltage (only Satellite)
+ * @sectone:		SEC tone mode (only Satellite)
+ * @inversion:		Spectral inversion
+ * @fec_inner:		Forward error correction inner Code Rate
+ * @transmission_mode:	Transmission Mode
+ * @bandwidth_hz:	Bandwidth, in Hz. A zero value means that userspace
+ *			wants to autodetect.
+ * @guard_interval:	Guard Interval
+ * @hierarchy:		Hierarchy
+ * @symbol_rate:	Symbol Rate
+ * @code_rate_HP:	high priority stream code rate
+ * @code_rate_LP:	low priority stream code rate
+ * @pilot:		Enable/disable/autodetect pilot tones
+ * @rolloff:		Rolloff factor (alpha)
+ * @delivery_system:	FE delivery system (e. g. digital TV standard)
+ * @interleaving:	interleaving
+ * @isdbt_partial_reception: ISDB-T partial reception (only ISDB standard)
+ * @isdbt_sb_mode:	ISDB-T Sound Broadcast (SB) mode (only ISDB standard)
+ * @isdbt_sb_subchannel:	ISDB-T SB subchannel (only ISDB standard)
+ * @isdbt_sb_segment_idx:	ISDB-T SB segment index (only ISDB standard)
+ * @isdbt_sb_segment_count:	ISDB-T SB segment count (only ISDB standard)
+ * @isdbt_layer_enabled:	ISDB Layer enabled (only ISDB standard)
+ * @layer:		ISDB per-layer data (only ISDB standard)
+ * @layer.segment_count: Segment Count;
+ * @layer.fec:		per layer code rate;
+ * @layer.modulation:	per layer modulation;
+ * @layer.interleaving:	 per layer interleaving.
+ * @stream_id:		If different than zero, enable substream filtering, if
+ *			hardware supports (DVB-S2 and DVB-T2).
+ * @scrambling_sequence_index:	Carries the index of the DVB-S2 physical layer
+ *				scrambling sequence.
+ * @atscmh_fic_ver:	Version number of the FIC (Fast Information Channel)
+ *			signaling data (only ATSC-M/H)
+ * @atscmh_parade_id:	Parade identification number (only ATSC-M/H)
+ * @atscmh_nog:		Number of MH groups per MH subframe for a designated
+ *			parade (only ATSC-M/H)
+ * @atscmh_tnog:	Total number of MH groups including all MH groups
+ *			belonging to all MH parades in one MH subframe
+ *			(only ATSC-M/H)
+ * @atscmh_sgn:		Start group number (only ATSC-M/H)
+ * @atscmh_prc:		Parade repetition cycle (only ATSC-M/H)
+ * @atscmh_rs_frame_mode:	Reed Solomon (RS) frame mode (only ATSC-M/H)
+ * @atscmh_rs_frame_ensemble:	RS frame ensemble (only ATSC-M/H)
+ * @atscmh_rs_code_mode_pri:	RS code mode pri (only ATSC-M/H)
+ * @atscmh_rs_code_mode_sec:	RS code mode sec (only ATSC-M/H)
+ * @atscmh_sccc_block_mode:	Series Concatenated Convolutional Code (SCCC)
+ *				Block Mode (only ATSC-M/H)
+ * @atscmh_sccc_code_mode_a:	SCCC code mode A (only ATSC-M/H)
+ * @atscmh_sccc_code_mode_b:	SCCC code mode B (only ATSC-M/H)
+ * @atscmh_sccc_code_mode_c:	SCCC code mode C (only ATSC-M/H)
+ * @atscmh_sccc_code_mode_d:	SCCC code mode D (only ATSC-M/H)
+ * @lna:		Power ON/OFF/AUTO the Linear Now-noise Amplifier (LNA)
+ * @strength:		DVBv5 API statistics: Signal Strength
+ * @cnr:		DVBv5 API statistics: Signal to Noise ratio of the
+ *			(main) carrier
+ * @pre_bit_error:	DVBv5 API statistics: pre-Viterbi bit error count
+ * @pre_bit_count:	DVBv5 API statistics: pre-Viterbi bit count
+ * @post_bit_error:	DVBv5 API statistics: post-Viterbi bit error count
+ * @post_bit_count:	DVBv5 API statistics: post-Viterbi bit count
+ * @block_error:	DVBv5 API statistics: block error count
+ * @block_count:	DVBv5 API statistics: block count
+ *
+ * NOTE: derivated statistics like Uncorrected Error blocks (UCE) are
+ * calculated on userspace.
+ *
+ * Only a subset of the properties are needed for a given delivery system.
+ * For more info, consult the media_api.html with the documentation of the
+ * Userspace API.
+ */
+struct dtv_frontend_properties {
+	u32			frequency;
+	enum fe_modulation	modulation;
+
+	enum fe_sec_voltage	voltage;
+	enum fe_sec_tone_mode	sectone;
+	enum fe_spectral_inversion inversion;
+	enum fe_code_rate	fec_inner;
+	enum fe_transmit_mode	transmission_mode;
+	u32			bandwidth_hz;	/* 0 = AUTO */
+	enum fe_guard_interval	guard_interval;
+	enum fe_hierarchy	hierarchy;
+	u32			symbol_rate;
+	enum fe_code_rate	code_rate_HP;
+	enum fe_code_rate	code_rate_LP;
+
+	enum fe_pilot		pilot;
+	enum fe_rolloff		rolloff;
+
+	enum fe_delivery_system	delivery_system;
+
+	enum fe_interleaving	interleaving;
+
+	/* ISDB-T specifics */
+	u8			isdbt_partial_reception;
+	u8			isdbt_sb_mode;
+	u8			isdbt_sb_subchannel;
+	u32			isdbt_sb_segment_idx;
+	u32			isdbt_sb_segment_count;
+	u8			isdbt_layer_enabled;
+	struct {
+	    u8			segment_count;
+	    enum fe_code_rate	fec;
+	    enum fe_modulation	modulation;
+	    u8			interleaving;
+	} layer[3];
+
+	/* Multistream specifics */
+	u32			stream_id;
+
+	/* Physical Layer Scrambling specifics */
+	u32			scrambling_sequence_index;
+
+	/* ATSC-MH specifics */
+	u8			atscmh_fic_ver;
+	u8			atscmh_parade_id;
+	u8			atscmh_nog;
+	u8			atscmh_tnog;
+	u8			atscmh_sgn;
+	u8			atscmh_prc;
+
+	u8			atscmh_rs_frame_mode;
+	u8			atscmh_rs_frame_ensemble;
+	u8			atscmh_rs_code_mode_pri;
+	u8			atscmh_rs_code_mode_sec;
+	u8			atscmh_sccc_block_mode;
+	u8			atscmh_sccc_code_mode_a;
+	u8			atscmh_sccc_code_mode_b;
+	u8			atscmh_sccc_code_mode_c;
+	u8			atscmh_sccc_code_mode_d;
+
+	u32			lna;
+
+	/* statistics data */
+	struct dtv_fe_stats	strength;
+	struct dtv_fe_stats	cnr;
+	struct dtv_fe_stats	pre_bit_error;
+	struct dtv_fe_stats	pre_bit_count;
+	struct dtv_fe_stats	post_bit_error;
+	struct dtv_fe_stats	post_bit_count;
+	struct dtv_fe_stats	block_error;
+	struct dtv_fe_stats	block_count;
+};
+
+#define DVB_FE_NO_EXIT  0
+#define DVB_FE_NORMAL_EXIT      1
+#define DVB_FE_DEVICE_REMOVED   2
+#define DVB_FE_DEVICE_RESUME    3
+
+/**
+ * struct dvb_frontend - Frontend structure to be used on drivers.
+ *
+ * @refcount:		refcount to keep track of &struct dvb_frontend
+ *			references
+ * @ops:		embedded &struct dvb_frontend_ops
+ * @dvb:		pointer to &struct dvb_adapter
+ * @demodulator_priv:	demod private data
+ * @tuner_priv:		tuner private data
+ * @frontend_priv:	frontend private data
+ * @sec_priv:		SEC private data
+ * @analog_demod_priv:	Analog demod private data
+ * @dtv_property_cache:	embedded &struct dtv_frontend_properties
+ * @callback:		callback function used on some drivers to call
+ *			either the tuner or the demodulator.
+ * @id:			Frontend ID
+ * @exit:		Used to inform the DVB core that the frontend
+ *			thread should exit (usually, means that the hardware
+ *			got disconnected.
+ */
+
+struct dvb_frontend {
+	struct kref refcount;
+	struct dvb_frontend_ops ops;
+	struct dvb_adapter *dvb;
+	void *demodulator_priv;
+	void *tuner_priv;
+	void *frontend_priv;
+	void *sec_priv;
+	void *analog_demod_priv;
+	struct dtv_frontend_properties dtv_property_cache;
+#define DVB_FRONTEND_COMPONENT_TUNER 0
+#define DVB_FRONTEND_COMPONENT_DEMOD 1
+	int (*callback)(void *adapter_priv, int component, int cmd, int arg);
+	int id;
+	unsigned int exit;
+};
+
+/**
+ * dvb_register_frontend() - Registers a DVB frontend at the adapter
+ *
+ * @dvb: pointer to &struct dvb_adapter
+ * @fe: pointer to &struct dvb_frontend
+ *
+ * Allocate and initialize the private data needed by the frontend core to
+ * manage the frontend and calls dvb_register_device() to register a new
+ * frontend. It also cleans the property cache that stores the frontend
+ * parameters and selects the first available delivery system.
+ */
+int dvb_register_frontend(struct dvb_adapter *dvb,
+				 struct dvb_frontend *fe);
+
+/**
+ * dvb_unregister_frontend() - Unregisters a DVB frontend
+ *
+ * @fe: pointer to &struct dvb_frontend
+ *
+ * Stops the frontend kthread, calls dvb_unregister_device() and frees the
+ * private frontend data allocated by dvb_register_frontend().
+ *
+ * NOTE: This function doesn't frees the memory allocated by the demod,
+ * by the SEC driver and by the tuner. In order to free it, an explicit call to
+ * dvb_frontend_detach() is needed, after calling this function.
+ */
+int dvb_unregister_frontend(struct dvb_frontend *fe);
+
+/**
+ * dvb_frontend_detach() - Detaches and frees frontend specific data
+ *
+ * @fe: pointer to &struct dvb_frontend
+ *
+ * This function should be called after dvb_unregister_frontend(). It
+ * calls the SEC, tuner and demod release functions:
+ * &dvb_frontend_ops.release_sec, &dvb_frontend_ops.tuner_ops.release,
+ * &dvb_frontend_ops.analog_ops.release and &dvb_frontend_ops.release.
+ *
+ * If the driver is compiled with %CONFIG_MEDIA_ATTACH, it also decreases
+ * the module reference count, needed to allow userspace to remove the
+ * previously used DVB frontend modules.
+ */
+void dvb_frontend_detach(struct dvb_frontend *fe);
+
+/**
+ * dvb_frontend_suspend() - Suspends a Digital TV frontend
+ *
+ * @fe: pointer to &struct dvb_frontend
+ *
+ * This function prepares a Digital TV frontend to suspend.
+ *
+ * In order to prepare the tuner to suspend, if
+ * &dvb_frontend_ops.tuner_ops.suspend\(\) is available, it calls it. Otherwise,
+ * it will call &dvb_frontend_ops.tuner_ops.sleep\(\), if available.
+ *
+ * It will also call &dvb_frontend_ops.sleep\(\) to put the demod to suspend.
+ *
+ * The drivers should also call dvb_frontend_suspend\(\) as part of their
+ * handler for the &device_driver.suspend\(\).
+ */
+int dvb_frontend_suspend(struct dvb_frontend *fe);
+
+/**
+ * dvb_frontend_resume() - Resumes a Digital TV frontend
+ *
+ * @fe: pointer to &struct dvb_frontend
+ *
+ * This function resumes the usual operation of the tuner after resume.
+ *
+ * In order to resume the frontend, it calls the demod &dvb_frontend_ops.init\(\).
+ *
+ * If &dvb_frontend_ops.tuner_ops.resume\(\) is available, It, it calls it.
+ * Otherwise,t will call &dvb_frontend_ops.tuner_ops.init\(\), if available.
+ *
+ * Once tuner and demods are resumed, it will enforce that the SEC voltage and
+ * tone are restored to their previous values and wake up the frontend's
+ * kthread in order to retune the frontend.
+ *
+ * The drivers should also call dvb_frontend_resume() as part of their
+ * handler for the &device_driver.resume\(\).
+ */
+int dvb_frontend_resume(struct dvb_frontend *fe);
+
+/**
+ * dvb_frontend_reinitialise() - forces a reinitialisation at the frontend
+ *
+ * @fe: pointer to &struct dvb_frontend
+ *
+ * Calls &dvb_frontend_ops.init\(\) and &dvb_frontend_ops.tuner_ops.init\(\),
+ * and resets SEC tone and voltage (for Satellite systems).
+ *
+ * NOTE: Currently, this function is used only by one driver (budget-av).
+ * It seems to be due to address some special issue with that specific
+ * frontend.
+ */
+void dvb_frontend_reinitialise(struct dvb_frontend *fe);
+
+/**
+ * dvb_frontend_sleep_until() - Sleep for the amount of time given by
+ *                      add_usec parameter
+ *
+ * @waketime: pointer to &struct ktime_t
+ * @add_usec: time to sleep, in microseconds
+ *
+ * This function is used to measure the time required for the
+ * FE_DISHNETWORK_SEND_LEGACY_CMD() ioctl to work. It needs to be as precise
+ * as possible, as it affects the detection of the dish tone command at the
+ * satellite subsystem.
+ *
+ * Its used internally by the DVB frontend core, in order to emulate
+ * FE_DISHNETWORK_SEND_LEGACY_CMD() using the &dvb_frontend_ops.set_voltage\(\)
+ * callback.
+ *
+ * NOTE: it should not be used at the drivers, as the emulation for the
+ * legacy callback is provided by the Kernel. The only situation where this
+ * should be at the drivers is when there are some bugs at the hardware that
+ * would prevent the core emulation to work. On such cases, the driver would
+ * be writing a &dvb_frontend_ops.dishnetwork_send_legacy_command\(\) and
+ * calling this function directly.
+ */
+void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec);
+
+#endif
diff --git a/include/media/dvb_math.h b/include/media/dvb_math.h
new file mode 100644
index 000000000000..8690ec42954d
--- /dev/null
+++ b/include/media/dvb_math.h
@@ -0,0 +1,66 @@
+/*
+ * dvb-math provides some complex fixed-point math
+ * operations shared between the dvb related stuff
+ *
+ * Copyright (C) 2006 Christoph Pfister (christophpfister@gmail.com)
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#ifndef __DVB_MATH_H
+#define __DVB_MATH_H
+
+#include <linux/types.h>
+
+/**
+ * intlog2 - computes log2 of a value; the result is shifted left by 24 bits
+ *
+ * @value: The value (must be != 0)
+ *
+ * to use rational values you can use the following method:
+ *
+ *   intlog2(value) = intlog2(value * 2^x) - x * 2^24
+ *
+ * Some usecase examples:
+ *
+ *	intlog2(8) will give 3 << 24 = 3 * 2^24
+ *
+ *	intlog2(9) will give 3 << 24 + ... = 3.16... * 2^24
+ *
+ *	intlog2(1.5) = intlog2(3) - 2^24 = 0.584... * 2^24
+ *
+ *
+ * return: log2(value) * 2^24
+ */
+extern unsigned int intlog2(u32 value);
+
+/**
+ * intlog10 - computes log10 of a value; the result is shifted left by 24 bits
+ *
+ * @value: The value (must be != 0)
+ *
+ * to use rational values you can use the following method:
+ *
+ *   intlog10(value) = intlog10(value * 10^x) - x * 2^24
+ *
+ * An usecase example:
+ *
+ *	intlog10(1000) will give 3 << 24 = 3 * 2^24
+ *
+ *   due to the implementation intlog10(1000) might be not exactly 3 * 2^24
+ *
+ * look at intlog2 for similar examples
+ *
+ * return: log10(value) * 2^24
+ */
+extern unsigned int intlog10(u32 value);
+
+#endif
diff --git a/include/media/dvb_net.h b/include/media/dvb_net.h
new file mode 100644
index 000000000000..5e31d37f25fa
--- /dev/null
+++ b/include/media/dvb_net.h
@@ -0,0 +1,93 @@
+/*
+ * dvb_net.h
+ *
+ * Copyright (C) 2001 Ralph Metzler for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _DVB_NET_H_
+#define _DVB_NET_H_
+
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include <media/dvbdev.h>
+
+#define DVB_NET_DEVICES_MAX 10
+
+#ifdef CONFIG_DVB_NET
+
+/**
+ * struct dvb_net - describes a DVB network interface
+ *
+ * @dvbdev:		pointer to &struct dvb_device.
+ * @device:		array of pointers to &struct net_device.
+ * @state:		array of integers to each net device. A value
+ *			different than zero means that the interface is
+ *			in usage.
+ * @exit:		flag to indicate when the device is being removed.
+ * @demux:		pointer to &struct dmx_demux.
+ * @ioctl_mutex:	protect access to this struct.
+ *
+ * Currently, the core supports up to %DVB_NET_DEVICES_MAX (10) network
+ * devices.
+ */
+
+struct dvb_net {
+	struct dvb_device *dvbdev;
+	struct net_device *device[DVB_NET_DEVICES_MAX];
+	int state[DVB_NET_DEVICES_MAX];
+	unsigned int exit:1;
+	struct dmx_demux *demux;
+	struct mutex ioctl_mutex;
+};
+
+/**
+ * dvb_net_init - nitializes a digital TV network device and registers it.
+ *
+ * @adap:	pointer to &struct dvb_adapter.
+ * @dvbnet:	pointer to &struct dvb_net.
+ * @dmxdemux:	pointer to &struct dmx_demux.
+ */
+int dvb_net_init(struct dvb_adapter *adap, struct dvb_net *dvbnet,
+		  struct dmx_demux *dmxdemux);
+
+/**
+ * dvb_net_release - releases a digital TV network device and unregisters it.
+ *
+ * @dvbnet:	pointer to &struct dvb_net.
+ */
+void dvb_net_release(struct dvb_net *dvbnet);
+
+#else
+
+struct dvb_net {
+	struct dvb_device *dvbdev;
+};
+
+static inline void dvb_net_release(struct dvb_net *dvbnet)
+{
+}
+
+static inline int dvb_net_init(struct dvb_adapter *adap,
+			       struct dvb_net *dvbnet, struct dmx_demux *dmx)
+{
+	return 0;
+}
+
+#endif /* ifdef CONFIG_DVB_NET */
+
+#endif
diff --git a/include/media/dvb_ringbuffer.h b/include/media/dvb_ringbuffer.h
new file mode 100644
index 000000000000..8ed6bcc3a56e
--- /dev/null
+++ b/include/media/dvb_ringbuffer.h
@@ -0,0 +1,280 @@
+/*
+ *
+ * dvb_ringbuffer.h: ring buffer implementation for the dvb driver
+ *
+ * Copyright (C) 2003 Oliver Endriss
+ * Copyright (C) 2004 Andrew de Quincey
+ *
+ * based on code originally found in av7110.c & dvb_ci.c:
+ * Copyright (C) 1999-2003 Ralph Metzler & Marcus Metzler
+ *                         for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#ifndef _DVB_RINGBUFFER_H_
+#define _DVB_RINGBUFFER_H_
+
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+
+/**
+ * struct dvb_ringbuffer - Describes a ring buffer used at DVB framework
+ *
+ * @data: Area were the ringbuffer data is written
+ * @size: size of the ringbuffer
+ * @pread: next position to read
+ * @pwrite: next position to write
+ * @error: used by ringbuffer clients to indicate that an error happened.
+ * @queue: Wait queue used by ringbuffer clients to indicate when buffer
+ *         was filled
+ * @lock: Spinlock used to protect the ringbuffer
+ */
+struct dvb_ringbuffer {
+	u8               *data;
+	ssize_t           size;
+	ssize_t           pread;
+	ssize_t           pwrite;
+	int               error;
+
+	wait_queue_head_t queue;
+	spinlock_t        lock;
+};
+
+#define DVB_RINGBUFFER_PKTHDRSIZE 3
+
+/**
+ * dvb_ringbuffer_init - initialize ring buffer, lock and queue
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @data: pointer to the buffer where the data will be stored
+ * @len: bytes from ring buffer into @buf
+ */
+extern void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data,
+				size_t len);
+
+/**
+ * dvb_ringbuffer_empty - test whether buffer is empty
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ */
+extern int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf);
+
+/**
+ * dvb_ringbuffer_free - returns the number of free bytes in the buffer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ *
+ * Return: number of free bytes in the buffer
+ */
+extern ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf);
+
+/**
+ * dvb_ringbuffer_avail - returns the number of bytes waiting in the buffer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ *
+ * Return: number of bytes waiting in the buffer
+ */
+extern ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf);
+
+/**
+ * dvb_ringbuffer_reset - resets the ringbuffer to initial state
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ *
+ * Resets the read and write pointers to zero and flush the buffer.
+ *
+ * This counts as a read and write operation
+ */
+extern void dvb_ringbuffer_reset(struct dvb_ringbuffer *rbuf);
+
+/*
+ * read routines & macros
+ */
+
+/**
+ * dvb_ringbuffer_flush - flush buffer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ */
+extern void dvb_ringbuffer_flush(struct dvb_ringbuffer *rbuf);
+
+/**
+ * dvb_ringbuffer_flush_spinlock_wakeup- flush buffer protected by spinlock
+ *      and wake-up waiting task(s)
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ */
+extern void dvb_ringbuffer_flush_spinlock_wakeup(struct dvb_ringbuffer *rbuf);
+
+/**
+ * DVB_RINGBUFFER_PEEK - peek at byte @offs in the buffer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @offs: offset inside the ringbuffer
+ */
+#define DVB_RINGBUFFER_PEEK(rbuf, offs)	\
+			((rbuf)->data[((rbuf)->pread + (offs)) % (rbuf)->size])
+
+/**
+ * DVB_RINGBUFFER_SKIP - advance read ptr by @num bytes
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @num: number of bytes to advance
+ */
+#define DVB_RINGBUFFER_SKIP(rbuf, num)	{\
+			(rbuf)->pread = ((rbuf)->pread + (num)) % (rbuf)->size;\
+}
+
+/**
+ * dvb_ringbuffer_read_user - Reads a buffer into a user pointer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @buf: pointer to the buffer where the data will be stored
+ * @len: bytes from ring buffer into @buf
+ *
+ * This variant assumes that the buffer is a memory at the userspace. So,
+ * it will internally call copy_to_user().
+ *
+ * Return: number of bytes transferred or -EFAULT
+ */
+extern ssize_t dvb_ringbuffer_read_user(struct dvb_ringbuffer *rbuf,
+				   u8 __user *buf, size_t len);
+
+/**
+ * dvb_ringbuffer_read - Reads a buffer into a pointer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @buf: pointer to the buffer where the data will be stored
+ * @len: bytes from ring buffer into @buf
+ *
+ * This variant assumes that the buffer is a memory at the Kernel space
+ *
+ * Return: number of bytes transferred or -EFAULT
+ */
+extern void dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf,
+				   u8 *buf, size_t len);
+
+/*
+ * write routines & macros
+ */
+
+/**
+ * DVB_RINGBUFFER_WRITE_BYTE - write single byte to ring buffer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @byte: byte to write
+ */
+#define DVB_RINGBUFFER_WRITE_BYTE(rbuf, byte)	\
+			{ (rbuf)->data[(rbuf)->pwrite] = (byte); \
+			(rbuf)->pwrite = ((rbuf)->pwrite + 1) % (rbuf)->size; }
+
+/**
+ * dvb_ringbuffer_write - Writes a buffer into the ringbuffer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @buf: pointer to the buffer where the data will be read
+ * @len: bytes from ring buffer into @buf
+ *
+ * This variant assumes that the buffer is a memory at the Kernel space
+ *
+ * return: number of bytes transferred or -EFAULT
+ */
+extern ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf,
+				    size_t len);
+
+/**
+ * dvb_ringbuffer_write_user - Writes a buffer received via a user pointer
+ *
+ * @rbuf: pointer to struct dvb_ringbuffer
+ * @buf: pointer to the buffer where the data will be read
+ * @len: bytes from ring buffer into @buf
+ *
+ * This variant assumes that the buffer is a memory at the userspace. So,
+ * it will internally call copy_from_user().
+ *
+ * Return: number of bytes transferred or -EFAULT
+ */
+extern ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
+					 const u8 __user *buf, size_t len);
+
+/**
+ * dvb_ringbuffer_pkt_write - Write a packet into the ringbuffer.
+ *
+ * @rbuf: Ringbuffer to write to.
+ * @buf: Buffer to write.
+ * @len: Length of buffer (currently limited to 65535 bytes max).
+ *
+ * Return: Number of bytes written, or -EFAULT, -ENOMEM, -EVINAL.
+ */
+extern ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8 *buf,
+					size_t len);
+
+/**
+ * dvb_ringbuffer_pkt_read_user - Read from a packet in the ringbuffer.
+ *
+ * @rbuf: Ringbuffer concerned.
+ * @idx: Packet index as returned by dvb_ringbuffer_pkt_next().
+ * @offset: Offset into packet to read from.
+ * @buf: Destination buffer for data.
+ * @len: Size of destination buffer.
+ *
+ * Return: Number of bytes read, or -EFAULT.
+ *
+ * .. note::
+ *
+ *    unlike dvb_ringbuffer_read(), this does **NOT** update the read pointer
+ *    in the ringbuffer. You must use dvb_ringbuffer_pkt_dispose() to mark a
+ *    packet as no longer required.
+ */
+extern ssize_t dvb_ringbuffer_pkt_read_user(struct dvb_ringbuffer *rbuf,
+					    size_t idx,
+					    int offset, u8 __user *buf,
+					    size_t len);
+
+/**
+ * dvb_ringbuffer_pkt_read - Read from a packet in the ringbuffer.
+ * Note: unlike dvb_ringbuffer_read_user(), this DOES update the read pointer
+ * in the ringbuffer.
+ *
+ * @rbuf: Ringbuffer concerned.
+ * @idx: Packet index as returned by dvb_ringbuffer_pkt_next().
+ * @offset: Offset into packet to read from.
+ * @buf: Destination buffer for data.
+ * @len: Size of destination buffer.
+ *
+ * Return: Number of bytes read, or -EFAULT.
+ */
+extern ssize_t dvb_ringbuffer_pkt_read(struct dvb_ringbuffer *rbuf, size_t idx,
+				       int offset, u8 *buf, size_t len);
+
+/**
+ * dvb_ringbuffer_pkt_dispose - Dispose of a packet in the ring buffer.
+ *
+ * @rbuf: Ring buffer concerned.
+ * @idx: Packet index as returned by dvb_ringbuffer_pkt_next().
+ */
+extern void dvb_ringbuffer_pkt_dispose(struct dvb_ringbuffer *rbuf, size_t idx);
+
+/**
+ * dvb_ringbuffer_pkt_next - Get the index of the next packet in a ringbuffer.
+ *
+ * @rbuf: Ringbuffer concerned.
+ * @idx: Previous packet index, or -1 to return the first packet index.
+ * @pktlen: On success, will be updated to contain the length of the packet
+ *          in bytes.
+ * returns Packet index (if >=0), or -1 if no packets available.
+ */
+extern ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf,
+				       size_t idx, size_t *pktlen);
+
+#endif /* _DVB_RINGBUFFER_H_ */
diff --git a/include/media/dvb_vb2.h b/include/media/dvb_vb2.h
new file mode 100644
index 000000000000..dda61af7c4cd
--- /dev/null
+++ b/include/media/dvb_vb2.h
@@ -0,0 +1,266 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * dvb-vb2.h - DVB driver helper framework for streaming I/O
+ *
+ * Copyright (C) 2015 Samsung Electronics
+ *
+ * Author: jh1009.sung@samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _DVB_VB2_H
+#define _DVB_VB2_H
+
+#include <linux/mutex.h>
+#include <linux/poll.h>
+#include <linux/dvb/dmx.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-vmalloc.h>
+
+/**
+ * enum dvb_buf_type - types of Digital TV memory-mapped buffers
+ *
+ * @DVB_BUF_TYPE_CAPTURE: buffer is filled by the Kernel,
+ *			  with a received Digital TV stream
+ */
+enum dvb_buf_type {
+	DVB_BUF_TYPE_CAPTURE        = 1,
+};
+
+/**
+ * enum dvb_vb2_states - states to control VB2 state machine
+ * @DVB_VB2_STATE_NONE:
+ *	VB2 engine not initialized yet, init failed or VB2 was released.
+ * @DVB_VB2_STATE_INIT:
+ *	VB2 engine initialized.
+ * @DVB_VB2_STATE_REQBUFS:
+ *	Buffers were requested
+ * @DVB_VB2_STATE_STREAMON:
+ *	VB2 is streaming. Callers should not check it directly. Instead,
+ *	they should use dvb_vb2_is_streaming().
+ *
+ * Note:
+ *
+ * Callers should not touch at the state machine directly. This
+ * is handled inside dvb_vb2.c.
+ */
+enum dvb_vb2_states {
+	DVB_VB2_STATE_NONE	= 0x0,
+	DVB_VB2_STATE_INIT	= 0x1,
+	DVB_VB2_STATE_REQBUFS	= 0x2,
+	DVB_VB2_STATE_STREAMON	= 0x4,
+};
+
+#define DVB_VB2_NAME_MAX (20)
+
+/**
+ * struct dvb_buffer - video buffer information for v4l2.
+ *
+ * @vb:		embedded struct &vb2_buffer.
+ * @list:	list of &struct dvb_buffer.
+ */
+struct dvb_buffer {
+	struct vb2_buffer	vb;
+	struct list_head	list;
+};
+
+/**
+ * struct dvb_vb2_ctx - control struct for VB2 handler
+ * @vb_q:	pointer to &struct vb2_queue with videobuf2 queue.
+ * @mutex:	mutex to serialize vb2 operations. Used by
+ *		vb2 core %wait_prepare and %wait_finish operations.
+ * @slock:	spin lock used to protect buffer filling at dvb_vb2.c.
+ * @dvb_q:	List of buffers that are not filled yet.
+ * @buf:	Pointer to the buffer that are currently being filled.
+ * @offset:	index to the next position at the @buf to be filled.
+ * @remain:	How many bytes are left to be filled at @buf.
+ * @state:	bitmask of buffer states as defined by &enum dvb_vb2_states.
+ * @buf_siz:	size of each VB2 buffer.
+ * @buf_cnt:	number of VB2 buffers.
+ * @nonblocking:
+ *		If different than zero, device is operating on non-blocking
+ *		mode.
+ * @name:	name of the device type. Currently, it can either be
+ *		"dvr" or "demux_filter".
+ */
+struct dvb_vb2_ctx {
+	struct vb2_queue	vb_q;
+	struct mutex		mutex;
+	spinlock_t		slock;
+	struct list_head	dvb_q;
+	struct dvb_buffer	*buf;
+	int	offset;
+	int	remain;
+	int	state;
+	int	buf_siz;
+	int	buf_cnt;
+	int	nonblocking;
+	char	name[DVB_VB2_NAME_MAX + 1];
+};
+
+#ifndef DVB_MMAP
+static inline int dvb_vb2_init(struct dvb_vb2_ctx *ctx,
+			       const char *name, int non_blocking)
+{
+	return 0;
+};
+static inline int dvb_vb2_release(struct dvb_vb2_ctx *ctx)
+{
+	return 0;
+};
+#define dvb_vb2_is_streaming(ctx) (0)
+#define dvb_vb2_fill_buffer(ctx, file, wait) (0)
+
+static inline unsigned int dvb_vb2_poll(struct dvb_vb2_ctx *ctx,
+					struct file *file,
+					poll_table *wait)
+{
+	return 0;
+}
+#else
+/**
+ * dvb_vb2_init - initializes VB2 handler
+ *
+ * @ctx:	control struct for VB2 handler
+ * @name:	name for the VB2 handler
+ * @non_blocking:
+ *		if not zero, it means that the device is at non-blocking mode
+ */
+int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int non_blocking);
+
+/**
+ * dvb_vb2_release - Releases the VB2 handler allocated resources and
+ *	put @ctx at DVB_VB2_STATE_NONE state.
+ * @ctx:	control struct for VB2 handler
+ */
+int dvb_vb2_release(struct dvb_vb2_ctx *ctx);
+
+/**
+ * dvb_vb2_is_streaming - checks if the VB2 handler is streaming
+ * @ctx:	control struct for VB2 handler
+ *
+ * Return: 0 if not streaming, 1 otherwise.
+ */
+int dvb_vb2_is_streaming(struct dvb_vb2_ctx *ctx);
+
+/**
+ * dvb_vb2_fill_buffer - fills a VB2 buffer
+ * @ctx:	control struct for VB2 handler
+ * @src:	place where the data is stored
+ * @len:	number of bytes to be copied from @src
+ */
+int dvb_vb2_fill_buffer(struct dvb_vb2_ctx *ctx,
+			const unsigned char *src, int len);
+
+/**
+ * dvb_vb2_poll - Wrapper to vb2_core_streamon() for Digital TV
+ *      buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @file:	&struct file argument passed to the poll
+ *		file operation handler.
+ * @wait:	&poll_table wait argument passed to the poll
+ *		file operation handler.
+ *
+ * Implements poll syscall() logic.
+ */
+unsigned int dvb_vb2_poll(struct dvb_vb2_ctx *ctx, struct file *file,
+			  poll_table *wait);
+#endif
+
+/**
+ * dvb_vb2_stream_on() - Wrapper to vb2_core_streamon() for Digital TV
+ *	buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ *
+ * Starts dvb streaming
+ */
+int dvb_vb2_stream_on(struct dvb_vb2_ctx *ctx);
+/**
+ * dvb_vb2_stream_off() - Wrapper to vb2_core_streamoff() for Digital TV
+ *	buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ *
+ * Stops dvb streaming
+ */
+int dvb_vb2_stream_off(struct dvb_vb2_ctx *ctx);
+
+/**
+ * dvb_vb2_reqbufs() - Wrapper to vb2_core_reqbufs() for Digital TV
+ *	buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @req:	&struct dmx_requestbuffers passed from userspace in
+ *		order to handle &DMX_REQBUFS.
+ *
+ * Initiate streaming by requesting a number of buffers. Also used to
+ * free previously requested buffers, is ``req->count`` is zero.
+ */
+int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req);
+
+/**
+ * dvb_vb2_querybuf() - Wrapper to vb2_core_querybuf() for Digital TV
+ *	buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @b:		&struct dmx_buffer passed from userspace in
+ *		order to handle &DMX_QUERYBUF.
+ *
+ *
+ */
+int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b);
+
+/**
+ * dvb_vb2_expbuf() - Wrapper to vb2_core_expbuf() for Digital TV
+ *	buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @exp:	&struct dmx_exportbuffer passed from userspace in
+ *		order to handle &DMX_EXPBUF.
+ *
+ * Export a buffer as a file descriptor.
+ */
+int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp);
+
+/**
+ * dvb_vb2_qbuf() - Wrapper to vb2_core_qbuf() for Digital TV buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @b:		&struct dmx_buffer passed from userspace in
+ *		order to handle &DMX_QBUF.
+ *
+ * Queue a Digital TV buffer as requested by userspace
+ */
+int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b);
+
+/**
+ * dvb_vb2_dqbuf() - Wrapper to vb2_core_dqbuf() for Digital TV
+ *	buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @b:		&struct dmx_buffer passed from userspace in
+ *		order to handle &DMX_DQBUF.
+ *
+ * Dequeue a Digital TV buffer to the userspace
+ */
+int dvb_vb2_dqbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b);
+
+/**
+ * dvb_vb2_mmap() - Wrapper to vb2_mmap() for Digital TV buffer handling.
+ *
+ * @ctx:	control struct for VB2 handler
+ * @vma:        pointer to &struct vm_area_struct with the vma passed
+ *              to the mmap file operation handler in the driver.
+ *
+ * map Digital TV video buffers into application address space.
+ */
+int dvb_vb2_mmap(struct dvb_vb2_ctx *ctx, struct vm_area_struct *vma);
+
+#endif /* _DVB_VB2_H */
diff --git a/include/media/dvbdev.h b/include/media/dvbdev.h
new file mode 100644
index 000000000000..554db879527f
--- /dev/null
+++ b/include/media/dvbdev.h
@@ -0,0 +1,407 @@
+/*
+ * dvbdev.h
+ *
+ * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
+ *                    for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Lesser Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _DVBDEV_H_
+#define _DVBDEV_H_
+
+#include <linux/types.h>
+#include <linux/poll.h>
+#include <linux/fs.h>
+#include <linux/list.h>
+#include <media/media-device.h>
+
+#define DVB_MAJOR 212
+
+#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0
+  #define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS
+#else
+  #define DVB_MAX_ADAPTERS 16
+#endif
+
+#define DVB_UNSET (-1)
+
+/* List of DVB device types */
+
+/**
+ * enum dvb_device_type - type of the Digital TV device
+ *
+ * @DVB_DEVICE_SEC:		Digital TV standalone Common Interface (CI)
+ * @DVB_DEVICE_FRONTEND:	Digital TV frontend.
+ * @DVB_DEVICE_DEMUX:		Digital TV demux.
+ * @DVB_DEVICE_DVR:		Digital TV digital video record (DVR).
+ * @DVB_DEVICE_CA:		Digital TV Conditional Access (CA).
+ * @DVB_DEVICE_NET:		Digital TV network.
+ *
+ * @DVB_DEVICE_VIDEO:		Digital TV video decoder.
+ *				Deprecated. Used only on av7110-av.
+ * @DVB_DEVICE_AUDIO:		Digital TV audio decoder.
+ *				Deprecated. Used only on av7110-av.
+ * @DVB_DEVICE_OSD:		Digital TV On Screen Display (OSD).
+ *				Deprecated. Used only on av7110.
+ */
+enum dvb_device_type {
+	DVB_DEVICE_SEC,
+	DVB_DEVICE_FRONTEND,
+	DVB_DEVICE_DEMUX,
+	DVB_DEVICE_DVR,
+	DVB_DEVICE_CA,
+	DVB_DEVICE_NET,
+
+	DVB_DEVICE_VIDEO,
+	DVB_DEVICE_AUDIO,
+	DVB_DEVICE_OSD,
+};
+
+#define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \
+	static short adapter_nr[] = \
+		{[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \
+	module_param_array(adapter_nr, short, NULL, 0444); \
+	MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers")
+
+struct dvb_frontend;
+
+/**
+ * struct dvb_adapter - represents a Digital TV adapter using Linux DVB API
+ *
+ * @num:		Number of the adapter
+ * @list_head:		List with the DVB adapters
+ * @device_list:	List with the DVB devices
+ * @name:		Name of the adapter
+ * @proposed_mac:	proposed MAC address for the adapter
+ * @priv:		private data
+ * @device:		pointer to struct device
+ * @module:		pointer to struct module
+ * @mfe_shared:		mfe shared: indicates mutually exclusive frontends
+ *			Thie usage of this flag is currently deprecated
+ * @mfe_dvbdev:		Frontend device in use, in the case of MFE
+ * @mfe_lock:		Lock to prevent using the other frontends when MFE is
+ *			used.
+ * @mdev:		pointer to struct media_device, used when the media
+ *			controller is used.
+ * @conn:		RF connector. Used only if the device has no separate
+ *			tuner.
+ * @conn_pads:		pointer to struct media_pad associated with @conn;
+ */
+struct dvb_adapter {
+	int num;
+	struct list_head list_head;
+	struct list_head device_list;
+	const char *name;
+	u8 proposed_mac [6];
+	void* priv;
+
+	struct device *device;
+
+	struct module *module;
+
+	int mfe_shared;			/* indicates mutually exclusive frontends */
+	struct dvb_device *mfe_dvbdev;	/* frontend device in use */
+	struct mutex mfe_lock;		/* access lock for thread creation */
+
+#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
+	struct media_device *mdev;
+	struct media_entity *conn;
+	struct media_pad *conn_pads;
+#endif
+};
+
+/**
+ * struct dvb_device - represents a DVB device node
+ *
+ * @list_head:	List head with all DVB devices
+ * @fops:	pointer to struct file_operations
+ * @adapter:	pointer to the adapter that holds this device node
+ * @type:	type of the device, as defined by &enum dvb_device_type.
+ * @minor:	devnode minor number. Major number is always DVB_MAJOR.
+ * @id:		device ID number, inside the adapter
+ * @readers:	Initialized by the caller. Each call to open() in Read Only mode
+ *		decreases this counter by one.
+ * @writers:	Initialized by the caller. Each call to open() in Read/Write
+ *		mode decreases this counter by one.
+ * @users:	Initialized by the caller. Each call to open() in any mode
+ *		decreases this counter by one.
+ * @wait_queue:	wait queue, used to wait for certain events inside one of
+ *		the DVB API callers
+ * @kernel_ioctl: callback function used to handle ioctl calls from userspace.
+ * @name:	Name to be used for the device at the Media Controller
+ * @entity:	pointer to struct media_entity associated with the device node
+ * @pads:	pointer to struct media_pad associated with @entity;
+ * @priv:	private data
+ * @intf_devnode: Pointer to media_intf_devnode. Used by the dvbdev core to
+ *		store the MC device node interface
+ * @tsout_num_entities: Number of Transport Stream output entities
+ * @tsout_entity: array with MC entities associated to each TS output node
+ * @tsout_pads: array with the source pads for each @tsout_entity
+ *
+ * This structure is used by the DVB core (frontend, CA, net, demux) in
+ * order to create the device nodes. Usually, driver should not initialize
+ * this struct diretly.
+ */
+struct dvb_device {
+	struct list_head list_head;
+	const struct file_operations *fops;
+	struct dvb_adapter *adapter;
+	enum dvb_device_type type;
+	int minor;
+	u32 id;
+
+	/* in theory, 'users' can vanish now,
+	   but I don't want to change too much now... */
+	int readers;
+	int writers;
+	int users;
+
+	wait_queue_head_t	  wait_queue;
+	/* don't really need those !? -- FIXME: use video_usercopy  */
+	int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg);
+
+	/* Needed for media controller register/unregister */
+#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
+	const char *name;
+
+	/* Allocated and filled inside dvbdev.c */
+	struct media_intf_devnode *intf_devnode;
+
+	unsigned tsout_num_entities;
+	struct media_entity *entity, *tsout_entity;
+	struct media_pad *pads, *tsout_pads;
+#endif
+
+	void *priv;
+};
+
+/**
+ * dvb_register_adapter - Registers a new DVB adapter
+ *
+ * @adap:	pointer to struct dvb_adapter
+ * @name:	Adapter's name
+ * @module:	initialized with THIS_MODULE at the caller
+ * @device:	pointer to struct device that corresponds to the device driver
+ * @adapter_nums: Array with a list of the numbers for @dvb_register_adapter;
+ *		to select among them. Typically, initialized with:
+ *		DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nums)
+ */
+int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
+			 struct module *module, struct device *device,
+			 short *adapter_nums);
+
+/**
+ * dvb_unregister_adapter - Unregisters a DVB adapter
+ *
+ * @adap:	pointer to struct dvb_adapter
+ */
+int dvb_unregister_adapter(struct dvb_adapter *adap);
+
+/**
+ * dvb_register_device - Registers a new DVB device
+ *
+ * @adap:	pointer to struct dvb_adapter
+ * @pdvbdev:	pointer to the place where the new struct dvb_device will be
+ *		stored
+ * @template:	Template used to create &pdvbdev;
+ * @priv:	private data
+ * @type:	type of the device, as defined by &enum dvb_device_type.
+ * @demux_sink_pads: Number of demux outputs, to be used to create the TS
+ *		outputs via the Media Controller.
+ */
+int dvb_register_device(struct dvb_adapter *adap,
+			struct dvb_device **pdvbdev,
+			const struct dvb_device *template,
+			void *priv,
+			enum dvb_device_type type,
+			int demux_sink_pads);
+
+/**
+ * dvb_remove_device - Remove a registered DVB device
+ *
+ * This does not free memory.  To do that, call dvb_free_device().
+ *
+ * @dvbdev:	pointer to struct dvb_device
+ */
+void dvb_remove_device(struct dvb_device *dvbdev);
+
+/**
+ * dvb_free_device - Free memory occupied by a DVB device.
+ *
+ * Call dvb_unregister_device() before calling this function.
+ *
+ * @dvbdev:	pointer to struct dvb_device
+ */
+void dvb_free_device(struct dvb_device *dvbdev);
+
+/**
+ * dvb_unregister_device - Unregisters a DVB device
+ *
+ * This is a combination of dvb_remove_device() and dvb_free_device().
+ * Using this function is usually a mistake, and is often an indicator
+ * for a use-after-free bug (when a userspace process keeps a file
+ * handle to a detached device).
+ *
+ * @dvbdev:	pointer to struct dvb_device
+ */
+void dvb_unregister_device(struct dvb_device *dvbdev);
+
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+/**
+ * dvb_create_media_graph - Creates media graph for the Digital TV part of the
+ *				device.
+ *
+ * @adap:			pointer to &struct dvb_adapter
+ * @create_rf_connector:	if true, it creates the RF connector too
+ *
+ * This function checks all DVB-related functions at the media controller
+ * entities and creates the needed links for the media graph. It is
+ * capable of working with multiple tuners or multiple frontends, but it
+ * won't create links if the device has multiple tuners and multiple frontends
+ * or if the device has multiple muxes. In such case, the caller driver should
+ * manually create the remaining links.
+ */
+__must_check int dvb_create_media_graph(struct dvb_adapter *adap,
+					bool create_rf_connector);
+
+/**
+ * dvb_register_media_controller - registers a media controller at DVB adapter
+ *
+ * @adap:			pointer to &struct dvb_adapter
+ * @mdev:			pointer to &struct media_device
+ */
+static inline void dvb_register_media_controller(struct dvb_adapter *adap,
+						 struct media_device *mdev)
+{
+	adap->mdev = mdev;
+}
+
+/**
+ * dvb_get_media_controller - gets the associated media controller
+ *
+ * @adap:			pointer to &struct dvb_adapter
+ */
+static inline struct media_device
+*dvb_get_media_controller(struct dvb_adapter *adap)
+{
+	return adap->mdev;
+}
+#else
+static inline
+int dvb_create_media_graph(struct dvb_adapter *adap,
+			   bool create_rf_connector)
+{
+	return 0;
+};
+#define dvb_register_media_controller(a, b) {}
+#define dvb_get_media_controller(a) NULL
+#endif
+
+/**
+ * dvb_generic_open - Digital TV open function, used by DVB devices
+ *
+ * @inode: pointer to &struct inode.
+ * @file: pointer to &struct file.
+ *
+ * Checks if a DVB devnode is still valid, and if the permissions are
+ * OK and increment negative use count.
+ */
+int dvb_generic_open(struct inode *inode, struct file *file);
+
+/**
+ * dvb_generic_close - Digital TV close function, used by DVB devices
+ *
+ * @inode: pointer to &struct inode.
+ * @file: pointer to &struct file.
+ *
+ * Checks if a DVB devnode is still valid, and if the permissions are
+ * OK and decrement negative use count.
+ */
+int dvb_generic_release(struct inode *inode, struct file *file);
+
+/**
+ * dvb_generic_ioctl - Digital TV close function, used by DVB devices
+ *
+ * @file: pointer to &struct file.
+ * @cmd: Ioctl name.
+ * @arg: Ioctl argument.
+ *
+ * Checks if a DVB devnode and struct dvbdev.kernel_ioctl is still valid.
+ * If so, calls dvb_usercopy().
+ */
+long dvb_generic_ioctl(struct file *file,
+		       unsigned int cmd, unsigned long arg);
+
+/**
+ * dvb_usercopy - copies data from/to userspace memory when an ioctl is
+ *      issued.
+ *
+ * @file: Pointer to struct &file.
+ * @cmd: Ioctl name.
+ * @arg: Ioctl argument.
+ * @func: function that will actually handle the ioctl
+ *
+ * Ancillary function that uses ioctl direction and size to copy from
+ * userspace. Then, it calls @func, and, if needed, data is copied back
+ * to userspace.
+ */
+int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
+		 int (*func)(struct file *file, unsigned int cmd, void *arg));
+
+/** generic DVB attach function. */
+#ifdef CONFIG_MEDIA_ATTACH
+
+/**
+ * dvb_attach - attaches a DVB frontend into the DVB core.
+ *
+ * @FUNCTION:	function on a frontend module to be called.
+ * @ARGS...:	@FUNCTION arguments.
+ *
+ * This ancillary function loads a frontend module in runtime and runs
+ * the @FUNCTION function there, with @ARGS.
+ * As it increments symbol usage cont, at unregister, dvb_detach()
+ * should be called.
+ */
+#define dvb_attach(FUNCTION, ARGS...) ({ \
+	void *__r = NULL; \
+	typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
+	if (__a) { \
+		__r = (void *) __a(ARGS); \
+		if (__r == NULL) \
+			symbol_put(FUNCTION); \
+	} else { \
+		printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
+	} \
+	__r; \
+})
+
+/**
+ * dvb_detach - detaches a DVB frontend loaded via dvb_attach()
+ *
+ * @FUNC:	attach function
+ *
+ * Decrements usage count for a function previously called via dvb_attach().
+ */
+
+#define dvb_detach(FUNC)	symbol_put_addr(FUNC)
+
+#else
+#define dvb_attach(FUNCTION, ARGS...) ({ \
+	FUNCTION(ARGS); \
+})
+
+#define dvb_detach(FUNC)	{}
+
+#endif
+
+#endif /* #ifndef _DVBDEV_H_ */
diff --git a/include/media/i2c-addr.h b/include/media/i2c-addr.h
deleted file mode 100644
index 1b6872f5e970..000000000000
--- a/include/media/i2c-addr.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *	V4L I2C address list
- *
- *
- *	Copyright (C) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
- *	Based on a previous mapping by
- *	Ralph Metzler (rjkm@thp.uni-koeln.de)
- *	Gerd Knorr <kraxel@goldbach.in-berlin.de>
- *
- */
-
-/* bttv address list */
-#define I2C_ADDR_TSA5522	0xc2
-#define I2C_ADDR_TDA7432	0x8a
-#define I2C_ADDR_TDA8425	0x82
-#define I2C_ADDR_TDA9840	0x84
-#define I2C_ADDR_TDA9850	0xb6 /* also used by 9855,9873 */
-#define I2C_ADDR_TDA9874	0xb0 /* also used by 9875 */
-#define I2C_ADDR_TDA9875	0xb0
-#define I2C_ADDR_HAUPEE		0xa0
-#define I2C_ADDR_STBEE		0xae
-#define I2C_ADDR_VHX		0xc0
-#define I2C_ADDR_MSP3400	0x80
-#define I2C_ADDR_MSP3400_ALT	0x88
-#define I2C_ADDR_TEA6300	0x80 /* also used by 6320 */
-#define I2C_ADDR_DPL3518	0x84
-#define I2C_ADDR_TDA9887	0x86
-
-/*
- * i2c bus addresses for the chips supported by tvaudio.c
- */
-
-#define I2C_ADDR_TDA8425	0x82
-#define I2C_ADDR_TDA9840	0x84 /* also used by TA8874Z */
-#define I2C_ADDR_TDA985x_L	0xb4 /* also used by 9873 */
-#define I2C_ADDR_TDA985x_H	0xb6
-#define I2C_ADDR_TDA9874	0xb0 /* also used by 9875 */
-
-#define I2C_ADDR_TEA6300	0x80 /* also used by 6320 */
-#define I2C_ADDR_TEA6420	0x98
-
-#define I2C_ADDR_PIC16C54	0x96 /* PV951 */
diff --git a/include/media/i2c/as3645a.h b/include/media/i2c/as3645a.h
deleted file mode 100644
index fffd4b563f5a..000000000000
--- a/include/media/i2c/as3645a.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * include/media/i2c/as3645a.h
- *
- * Copyright (C) 2008-2011 Nokia Corporation
- *
- * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- */
-
-#ifndef __AS3645A_H__
-#define __AS3645A_H__
-
-#include <media/v4l2-subdev.h>
-
-#define AS3645A_NAME				"as3645a"
-#define AS3645A_I2C_ADDR			(0x60 >> 1) /* W:0x60, R:0x61 */
-
-#define AS3645A_FLASH_TIMEOUT_MIN		100000	/* us */
-#define AS3645A_FLASH_TIMEOUT_MAX		850000
-#define AS3645A_FLASH_TIMEOUT_STEP		50000
-
-#define AS3645A_FLASH_INTENSITY_MIN		200	/* mA */
-#define AS3645A_FLASH_INTENSITY_MAX_1LED	500
-#define AS3645A_FLASH_INTENSITY_MAX_2LEDS	400
-#define AS3645A_FLASH_INTENSITY_STEP		20
-
-#define AS3645A_TORCH_INTENSITY_MIN		20	/* mA */
-#define AS3645A_TORCH_INTENSITY_MAX		160
-#define AS3645A_TORCH_INTENSITY_STEP		20
-
-#define AS3645A_INDICATOR_INTENSITY_MIN		0	/* uA */
-#define AS3645A_INDICATOR_INTENSITY_MAX		10000
-#define AS3645A_INDICATOR_INTENSITY_STEP	2500
-
-/*
- * as3645a_platform_data - Flash controller platform data
- * @set_power:	Set power callback
- * @vref:	VREF offset (0=0V, 1=+0.3V, 2=-0.3V, 3=+0.6V)
- * @peak:	Inductor peak current limit (0=1.25A, 1=1.5A, 2=1.75A, 3=2.0A)
- * @ext_strobe:	True if external flash strobe can be used
- * @flash_max_current:	Max flash current (mA, <= AS3645A_FLASH_INTENSITY_MAX)
- * @torch_max_current:	Max torch current (mA, >= AS3645A_TORCH_INTENSITY_MAX)
- * @timeout_max:	Max flash timeout (us, <= AS3645A_FLASH_TIMEOUT_MAX)
- */
-struct as3645a_platform_data {
-	int (*set_power)(struct v4l2_subdev *subdev, int on);
-	unsigned int vref;
-	unsigned int peak;
-	bool ext_strobe;
-
-	/* Flash and torch currents and timeout limits */
-	unsigned int flash_max_current;
-	unsigned int torch_max_current;
-	unsigned int timeout_max;
-};
-
-#endif /* __AS3645A_H__ */
diff --git a/include/media/i2c/bt819.h b/include/media/i2c/bt819.h
index 8025f4bc2bb6..1bcf0dbeb516 100644
--- a/include/media/i2c/bt819.h
+++ b/include/media/i2c/bt819.h
@@ -30,7 +30,7 @@
 
    Note: these ioctls that internal to the kernel and are never called
    from userspace. */
-#define BT819_FIFO_RESET_LOW 	_IO('b', 0)
-#define BT819_FIFO_RESET_HIGH 	_IO('b', 1)
+#define BT819_FIFO_RESET_LOW	_IO('b', 0)
+#define BT819_FIFO_RESET_HIGH	_IO('b', 1)
 
 #endif
diff --git a/include/media/i2c/ir-kbd-i2c.h b/include/media/i2c/ir-kbd-i2c.h
index 76491c62c254..9f47d6a48cff 100644
--- a/include/media/i2c/ir-kbd-i2c.h
+++ b/include/media/i2c/ir-kbd-i2c.h
@@ -19,11 +19,15 @@ struct IR_i2c {
 	u32                    polling_interval; /* in ms */
 
 	struct delayed_work    work;
-	char                   name[32];
 	char                   phys[32];
 	int                    (*get_key)(struct IR_i2c *ir,
 					  enum rc_proto *protocol,
 					  u32 *scancode, u8 *toggle);
+	/* tx */
+	struct i2c_client      *tx_c;
+	struct mutex	       lock;	/* do not poll Rx during Tx */
+	unsigned int	       carrier;
+	unsigned int	       duty_cycle;
 };
 
 enum ir_kbd_get_key_fn {
diff --git a/include/media/i2c/m52790.h b/include/media/i2c/m52790.h
index 7ddffae31a67..8d9db3cf6fab 100644
--- a/include/media/i2c/m52790.h
+++ b/include/media/i2c/m52790.h
@@ -23,57 +23,57 @@
 
 /* Input routing switch 1 */
 
-#define M52790_SW1_IN_MASK 	0x0003
-#define M52790_SW1_IN_TUNER 	0x0000
-#define M52790_SW1_IN_V2    	0x0001
-#define M52790_SW1_IN_V3    	0x0002
-#define M52790_SW1_IN_V4    	0x0003
+#define M52790_SW1_IN_MASK	0x0003
+#define M52790_SW1_IN_TUNER	0x0000
+#define M52790_SW1_IN_V2	0x0001
+#define M52790_SW1_IN_V3	0x0002
+#define M52790_SW1_IN_V4	0x0003
 
 /* Selects component input instead of composite */
-#define M52790_SW1_YCMIX    	0x0004
+#define M52790_SW1_YCMIX	0x0004
 
 
 /* Input routing switch 2 */
 
-#define M52790_SW2_IN_MASK 	0x0300
-#define M52790_SW2_IN_TUNER 	0x0000
-#define M52790_SW2_IN_V2    	0x0100
-#define M52790_SW2_IN_V3    	0x0200
-#define M52790_SW2_IN_V4    	0x0300
+#define M52790_SW2_IN_MASK	0x0300
+#define M52790_SW2_IN_TUNER	0x0000
+#define M52790_SW2_IN_V2	0x0100
+#define M52790_SW2_IN_V3	0x0200
+#define M52790_SW2_IN_V4	0x0300
 
 /* Selects component input instead of composite */
-#define M52790_SW2_YCMIX    	0x0400
+#define M52790_SW2_YCMIX	0x0400
 
 
 /* Output routing switch 1 */
 
 /* Enable 6dB amplifier for composite out */
-#define M52790_SW1_V_AMP    	0x0008
+#define M52790_SW1_V_AMP	0x0008
 
 /* Enable 6dB amplifier for component out */
-#define M52790_SW1_YC_AMP   	0x0010
+#define M52790_SW1_YC_AMP	0x0010
 
 /* Audio output mode */
-#define M52790_SW1_AUDIO_MASK 	0x00c0
-#define M52790_SW1_AUDIO_MUTE 	0x0000
-#define M52790_SW1_AUDIO_R 	0x0040
-#define M52790_SW1_AUDIO_L 	0x0080
+#define M52790_SW1_AUDIO_MASK	0x00c0
+#define M52790_SW1_AUDIO_MUTE	0x0000
+#define M52790_SW1_AUDIO_R	0x0040
+#define M52790_SW1_AUDIO_L	0x0080
 #define M52790_SW1_AUDIO_STEREO 0x00c0
 
 
 /* Output routing switch 2 */
 
 /* Enable 6dB amplifier for composite out */
-#define M52790_SW2_V_AMP    	0x0800
+#define M52790_SW2_V_AMP	0x0800
 
 /* Enable 6dB amplifier for component out */
-#define M52790_SW2_YC_AMP   	0x1000
+#define M52790_SW2_YC_AMP	0x1000
 
 /* Audio output mode */
-#define M52790_SW2_AUDIO_MASK 	0xc000
-#define M52790_SW2_AUDIO_MUTE 	0x0000
-#define M52790_SW2_AUDIO_R 	0x4000
-#define M52790_SW2_AUDIO_L 	0x8000
+#define M52790_SW2_AUDIO_MASK	0xc000
+#define M52790_SW2_AUDIO_MUTE	0x0000
+#define M52790_SW2_AUDIO_R	0x4000
+#define M52790_SW2_AUDIO_L	0x8000
 #define M52790_SW2_AUDIO_STEREO 0xc000
 
 
@@ -83,9 +83,9 @@
 #define M52790_IN_V3    (M52790_SW1_IN_V3 | M52790_SW2_IN_V3)
 #define M52790_IN_V4    (M52790_SW1_IN_V4 | M52790_SW2_IN_V4)
 
-#define M52790_OUT_STEREO 	(M52790_SW1_AUDIO_STEREO | \
+#define M52790_OUT_STEREO	(M52790_SW1_AUDIO_STEREO | \
 				 M52790_SW2_AUDIO_STEREO)
-#define M52790_OUT_AMP_STEREO 	(M52790_SW1_AUDIO_STEREO | \
+#define M52790_OUT_AMP_STEREO	(M52790_SW1_AUDIO_STEREO | \
 				 M52790_SW1_V_AMP | \
 				 M52790_SW2_AUDIO_STEREO | \
 				 M52790_SW2_V_AMP)
diff --git a/include/media/i2c/saa7115.h b/include/media/i2c/saa7115.h
index 53954c90e7f6..a0cda423509d 100644
--- a/include/media/i2c/saa7115.h
+++ b/include/media/i2c/saa7115.h
@@ -36,15 +36,15 @@
 #define SAA7115_SVIDEO3    9
 
 /* outputs */
-#define SAA7115_IPORT_ON    	1
-#define SAA7115_IPORT_OFF   	0
+#define SAA7115_IPORT_ON	1
+#define SAA7115_IPORT_OFF	0
 
 /* SAA7111 specific outputs. */
-#define SAA7111_VBI_BYPASS 	2
+#define SAA7111_VBI_BYPASS	2
 #define SAA7111_FMT_YUV422      0x00
-#define SAA7111_FMT_RGB 	0x40
-#define SAA7111_FMT_CCIR 	0x80
-#define SAA7111_FMT_YUV411 	0xc0
+#define SAA7111_FMT_RGB		0x40
+#define SAA7111_FMT_CCIR	0x80
+#define SAA7111_FMT_YUV411	0xc0
 
 /* config flags */
 /*
diff --git a/include/media/i2c/tvaudio.h b/include/media/i2c/tvaudio.h
index 1ac8184693f8..f13e1a386364 100644
--- a/include/media/i2c/tvaudio.h
+++ b/include/media/i2c/tvaudio.h
@@ -21,7 +21,22 @@
 #ifndef _TVAUDIO_H
 #define _TVAUDIO_H
 
-#include <media/i2c-addr.h>
+/*
+ * i2c bus addresses for the chips supported by tvaudio.c
+ */
+
+#define I2C_ADDR_TDA8425	0x82
+#define I2C_ADDR_TDA9840	0x84
+#define I2C_ADDR_TDA9874	0xb0 /* also used by 9875 */
+#define I2C_ADDR_TDA9875	0xb0
+#define I2C_ADDR_TDA8425	0x82
+#define I2C_ADDR_TDA9840	0x84 /* also used by TA8874Z */
+#define I2C_ADDR_TDA985x_L	0xb4 /* also used by 9873 */
+#define I2C_ADDR_TDA985x_H	0xb6
+#define I2C_ADDR_TDA9874	0xb0 /* also used by 9875 */
+#define I2C_ADDR_TEA6300	0x80 /* also used by 6320 */
+#define I2C_ADDR_TEA6420	0x98
+#define I2C_ADDR_PIC16C54	0x96 /* PV951 */
 
 /* The tvaudio module accepts the following inputs: */
 #define TVAUDIO_INPUT_TUNER  0
diff --git a/include/media/i2c/upd64031a.h b/include/media/i2c/upd64031a.h
index 48ec03c4ef23..1eba24dfee48 100644
--- a/include/media/i2c/upd64031a.h
+++ b/include/media/i2c/upd64031a.h
@@ -18,9 +18,9 @@
 #define _UPD64031A_H_
 
 /* Ghost reduction modes */
-#define UPD64031A_GR_ON 	0
-#define UPD64031A_GR_OFF 	1
-#define UPD64031A_GR_THROUGH 	3
+#define UPD64031A_GR_ON		0
+#define UPD64031A_GR_OFF	1
+#define UPD64031A_GR_THROUGH	3
 
 /* Direct 3D/YCS Connection */
 #define UPD64031A_3DYCS_DISABLE   (0 << 2)
diff --git a/include/media/lirc.h b/include/media/lirc.h
deleted file mode 100644
index 554988c860c1..000000000000
--- a/include/media/lirc.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <uapi/linux/lirc.h>
diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h
deleted file mode 100644
index d9c143d17f70..000000000000
--- a/include/media/lirc_dev.h
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * LIRC base driver
- *
- * by Artur Lipowski <alipowski@interia.pl>
- *        This code is licensed under GNU GPL
- *
- */
-
-#ifndef _LINUX_LIRC_DEV_H
-#define _LINUX_LIRC_DEV_H
-
-#define BUFLEN            16
-
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/ioctl.h>
-#include <linux/poll.h>
-#include <linux/kfifo.h>
-#include <media/lirc.h>
-#include <linux/device.h>
-#include <linux/cdev.h>
-
-struct lirc_buffer {
-	wait_queue_head_t wait_poll;
-	spinlock_t fifo_lock;
-	unsigned int chunk_size;
-	unsigned int size; /* in chunks */
-	/* Using chunks instead of bytes pretends to simplify boundary checking
-	 * And should allow for some performance fine tunning later */
-	struct kfifo fifo;
-};
-
-static inline void lirc_buffer_clear(struct lirc_buffer *buf)
-{
-	unsigned long flags;
-
-	if (kfifo_initialized(&buf->fifo)) {
-		spin_lock_irqsave(&buf->fifo_lock, flags);
-		kfifo_reset(&buf->fifo);
-		spin_unlock_irqrestore(&buf->fifo_lock, flags);
-	} else
-		WARN(1, "calling %s on an uninitialized lirc_buffer\n",
-		     __func__);
-}
-
-static inline int lirc_buffer_init(struct lirc_buffer *buf,
-				    unsigned int chunk_size,
-				    unsigned int size)
-{
-	int ret;
-
-	init_waitqueue_head(&buf->wait_poll);
-	spin_lock_init(&buf->fifo_lock);
-	buf->chunk_size = chunk_size;
-	buf->size = size;
-	ret = kfifo_alloc(&buf->fifo, size * chunk_size, GFP_KERNEL);
-
-	return ret;
-}
-
-static inline void lirc_buffer_free(struct lirc_buffer *buf)
-{
-	if (kfifo_initialized(&buf->fifo)) {
-		kfifo_free(&buf->fifo);
-	} else
-		WARN(1, "calling %s on an uninitialized lirc_buffer\n",
-		     __func__);
-}
-
-static inline int lirc_buffer_len(struct lirc_buffer *buf)
-{
-	int len;
-	unsigned long flags;
-
-	spin_lock_irqsave(&buf->fifo_lock, flags);
-	len = kfifo_len(&buf->fifo);
-	spin_unlock_irqrestore(&buf->fifo_lock, flags);
-
-	return len;
-}
-
-static inline int lirc_buffer_full(struct lirc_buffer *buf)
-{
-	return lirc_buffer_len(buf) == buf->size * buf->chunk_size;
-}
-
-static inline int lirc_buffer_empty(struct lirc_buffer *buf)
-{
-	return !lirc_buffer_len(buf);
-}
-
-static inline unsigned int lirc_buffer_read(struct lirc_buffer *buf,
-					    unsigned char *dest)
-{
-	unsigned int ret = 0;
-
-	if (lirc_buffer_len(buf) >= buf->chunk_size)
-		ret = kfifo_out_locked(&buf->fifo, dest, buf->chunk_size,
-				       &buf->fifo_lock);
-	return ret;
-
-}
-
-static inline unsigned int lirc_buffer_write(struct lirc_buffer *buf,
-					     unsigned char *orig)
-{
-	unsigned int ret;
-
-	ret = kfifo_in_locked(&buf->fifo, orig, buf->chunk_size,
-			      &buf->fifo_lock);
-
-	return ret;
-}
-
-/**
- * struct lirc_dev - represents a LIRC device
- *
- * @name:		used for logging
- * @minor:		the minor device (/dev/lircX) number for the device
- * @code_length:	length of a remote control key code expressed in bits
- * @features:		lirc compatible hardware features, like LIRC_MODE_RAW,
- *			LIRC_CAN\_\*, as defined at include/media/lirc.h.
- * @buffer_size:	Number of FIFO buffers with @chunk_size size.
- *			Only used if @rbuf is NULL.
- * @chunk_size:		Size of each FIFO buffer.
- *			Only used if @rbuf is NULL.
- * @data:		private per-driver data
- * @buf:		if %NULL, lirc_dev will allocate and manage the buffer,
- *			otherwise allocated by the caller which will
- *			have to write to the buffer by other means, like irq's
- *			(see also lirc_serial.c).
- * @buf_internal:	whether lirc_dev has allocated the read buffer or not
- * @rdev:		&struct rc_dev associated with the device
- * @fops:		&struct file_operations for the device
- * @owner:		the module owning this struct
- * @attached:		if the device is still live
- * @open:		open count for the device's chardev
- * @mutex:		serialises file_operations calls
- * @dev:		&struct device assigned to the device
- * @cdev:		&struct cdev assigned to the device
- */
-struct lirc_dev {
-	char name[40];
-	unsigned int minor;
-	__u32 code_length;
-	__u32 features;
-
-	unsigned int buffer_size; /* in chunks holding one code each */
-	unsigned int chunk_size;
-	struct lirc_buffer *buf;
-	bool buf_internal;
-
-	void *data;
-	struct rc_dev *rdev;
-	const struct file_operations *fops;
-	struct module *owner;
-
-	bool attached;
-	int open;
-
-	struct mutex mutex; /* protect from simultaneous accesses */
-
-	struct device dev;
-	struct cdev cdev;
-};
-
-struct lirc_dev *lirc_allocate_device(void);
-
-void lirc_free_device(struct lirc_dev *d);
-
-int lirc_register_device(struct lirc_dev *d);
-
-void lirc_unregister_device(struct lirc_dev *d);
-
-/* Must be called in the open fop before lirc_get_pdata() can be used */
-void lirc_init_pdata(struct inode *inode, struct file *file);
-
-/* Returns the private data stored in the lirc_dev
- * associated with the given device file pointer.
- */
-void *lirc_get_pdata(struct file *file);
-
-/* default file operations
- * used by drivers if they override only some operations
- */
-int lirc_dev_fop_open(struct inode *inode, struct file *file);
-int lirc_dev_fop_close(struct inode *inode, struct file *file);
-__poll_t lirc_dev_fop_poll(struct file *file, poll_table *wait);
-long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-ssize_t lirc_dev_fop_read(struct file *file, char __user *buffer, size_t length,
-			  loff_t *ppos);
-#endif
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 222d379960b7..a732af1dbba0 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -88,6 +88,8 @@ struct media_entity_enum {
  * @stack:		Graph traversal stack; the stack contains information
  *			on the path the media entities to be walked and the
  *			links through which they were reached.
+ * @stack.entity:	pointer to &struct media_entity at the graph.
+ * @stack.link:		pointer to &struct list_head.
  * @ent_enum:		Visited entities
  * @top:		The top of the stack
  */
@@ -247,6 +249,9 @@ enum media_entity_type {
  * @pipe:	Pipeline this entity belongs to.
  * @info:	Union with devnode information.  Kept just for backward
  *		compatibility.
+ * @info.dev:	Contains device major and minor info.
+ * @info.dev.major: device node major, if the device is a devnode.
+ * @info.dev.minor: device node minor, if the device is a devnode.
  * @major:	Devnode major number (zero if not applicable). Kept just
  *		for backward compatibility.
  * @minor:	Devnode minor number (zero if not applicable). Kept just
@@ -629,7 +634,11 @@ int media_entity_pads_init(struct media_entity *entity, u16 num_pads,
  * This function must be called during the cleanup phase after unregistering
  * the entity (currently, it does nothing).
  */
-static inline void media_entity_cleanup(struct media_entity *entity) {};
+#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
+static inline void media_entity_cleanup(struct media_entity *entity) {}
+#else
+#define media_entity_cleanup(entity) do { } while (false)
+#endif
 
 /**
  * media_create_pad_link() - creates a link between two entities.
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 314a1edb6189..aed4272d47f5 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -17,6 +17,7 @@
 #define _RC_CORE
 
 #include <linux/spinlock.h>
+#include <linux/cdev.h>
 #include <linux/kfifo.h>
 #include <linux/time.h>
 #include <linux/timer.h>
@@ -30,9 +31,9 @@ do {								\
 } while (0)
 
 /**
- * enum rc_driver_type - type of the RC output
+ * enum rc_driver_type - type of the RC driver.
  *
- * @RC_DRIVER_SCANCODE:	 Driver or hardware generates a scancode
+ * @RC_DRIVER_SCANCODE:	 Driver or hardware generates a scancode.
  * @RC_DRIVER_IR_RAW:	 Driver or hardware generates pulse/space sequences.
  *			 It needs a Infra-Red pulse/space decoder
  * @RC_DRIVER_IR_RAW_TX: Device transmitter only,
@@ -68,6 +69,33 @@ enum rc_filter_type {
 };
 
 /**
+ * struct lirc_fh - represents an open lirc file
+ * @list: list of open file handles
+ * @rc: rcdev for this lirc chardev
+ * @carrier_low: when setting the carrier range, first the low end must be
+ *	set with an ioctl and then the high end with another ioctl
+ * @send_timeout_reports: report timeouts in lirc raw IR.
+ * @rawir: queue for incoming raw IR
+ * @scancodes: queue for incoming decoded scancodes
+ * @wait_poll: poll struct for lirc device
+ * @send_mode: lirc mode for sending, either LIRC_MODE_SCANCODE or
+ *	LIRC_MODE_PULSE
+ * @rec_mode: lirc mode for receiving, either LIRC_MODE_SCANCODE or
+ *	LIRC_MODE_MODE2
+ */
+struct lirc_fh {
+	struct list_head list;
+	struct rc_dev *rc;
+	int				carrier_low;
+	bool				send_timeout_reports;
+	DECLARE_KFIFO_PTR(rawir, unsigned int);
+	DECLARE_KFIFO_PTR(scancodes, struct lirc_scancode);
+	wait_queue_head_t		wait_poll;
+	u8				send_mode;
+	u8				rec_mode;
+};
+
+/**
  * struct rc_dev - represents a remote control device
  * @dev: driver model's view of this device
  * @managed_alloc: devm_rc_allocate_device was used to create rc_dev
@@ -106,6 +134,8 @@ enum rc_filter_type {
  * @keypressed: whether a key is currently pressed
  * @keyup_jiffies: time (in jiffies) when the current keypress should be released
  * @timer_keyup: timer for releasing a keypress
+ * @timer_repeat: timer for autorepeat events. This is needed for CEC, which
+ *	has non-standard repeats.
  * @last_keycode: keycode of last keypress
  * @last_protocol: protocol of last keypress
  * @last_scancode: scancode of last keypress
@@ -115,6 +145,15 @@ enum rc_filter_type {
  * @max_timeout: maximum timeout supported by device
  * @rx_resolution : resolution (in ns) of input sampler
  * @tx_resolution: resolution (in ns) of output sampler
+ * @lirc_dev: lirc device
+ * @lirc_cdev: lirc char cdev
+ * @gap_start: time when gap starts
+ * @gap_duration: duration of initial gap
+ * @gap: true if we're in a gap
+ * @lirc_fh_lock: protects lirc_fh list
+ * @lirc_fh: list of open files
+ * @registered: set to true by rc_register_device(), false by
+ *	rc_unregister_device
  * @change_protocol: allow changing the protocol used on hardware decoders
  * @open: callback to allow drivers to enable polling/irq when IR input device
  *	is opened.
@@ -165,6 +204,7 @@ struct rc_dev {
 	bool				keypressed;
 	unsigned long			keyup_jiffies;
 	struct timer_list		timer_keyup;
+	struct timer_list		timer_repeat;
 	u32				last_keycode;
 	enum rc_proto			last_protocol;
 	u32				last_scancode;
@@ -174,6 +214,16 @@ struct rc_dev {
 	u32				max_timeout;
 	u32				rx_resolution;
 	u32				tx_resolution;
+#ifdef CONFIG_LIRC
+	struct device			lirc_dev;
+	struct cdev			lirc_cdev;
+	ktime_t				gap_start;
+	u64				gap_duration;
+	bool				gap;
+	spinlock_t			lirc_fh_lock;
+	struct list_head		lirc_fh;
+#endif
+	bool				registered;
 	int				(*change_protocol)(struct rc_dev *dev, u64 *rc_proto);
 	int				(*open)(struct rc_dev *dev);
 	void				(*close)(struct rc_dev *dev);
@@ -248,20 +298,6 @@ int devm_rc_register_device(struct device *parent, struct rc_dev *dev);
  */
 void rc_unregister_device(struct rc_dev *dev);
 
-/**
- * rc_open - Opens a RC device
- *
- * @rdev: pointer to struct rc_dev.
- */
-int rc_open(struct rc_dev *rdev);
-
-/**
- * rc_close - Closes a RC device
- *
- * @rdev: pointer to struct rc_dev.
- */
-void rc_close(struct rc_dev *rdev);
-
 void rc_repeat(struct rc_dev *dev);
 void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode,
 		u8 toggle);
@@ -309,6 +345,7 @@ int ir_raw_event_store_with_filter(struct rc_dev *dev,
 void ir_raw_event_set_idle(struct rc_dev *dev, bool idle);
 int ir_raw_encode_scancode(enum rc_proto protocol, u32 scancode,
 			   struct ir_raw_event *events, unsigned int max);
+int ir_raw_encode_carrier(enum rc_proto protocol);
 
 static inline void ir_raw_event_reset(struct rc_dev *dev)
 {
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 72197cb43781..7046734b3895 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -10,59 +10,7 @@
  */
 
 #include <linux/input.h>
-
-/**
- * enum rc_proto - the Remote Controller protocol
- *
- * @RC_PROTO_UNKNOWN: Protocol not known
- * @RC_PROTO_OTHER: Protocol known but proprietary
- * @RC_PROTO_RC5: Philips RC5 protocol
- * @RC_PROTO_RC5X_20: Philips RC5x 20 bit protocol
- * @RC_PROTO_RC5_SZ: StreamZap variant of RC5
- * @RC_PROTO_JVC: JVC protocol
- * @RC_PROTO_SONY12: Sony 12 bit protocol
- * @RC_PROTO_SONY15: Sony 15 bit protocol
- * @RC_PROTO_SONY20: Sony 20 bit protocol
- * @RC_PROTO_NEC: NEC protocol
- * @RC_PROTO_NECX: Extended NEC protocol
- * @RC_PROTO_NEC32: NEC 32 bit protocol
- * @RC_PROTO_SANYO: Sanyo protocol
- * @RC_PROTO_MCIR2_KBD: RC6-ish MCE keyboard
- * @RC_PROTO_MCIR2_MSE: RC6-ish MCE mouse
- * @RC_PROTO_RC6_0: Philips RC6-0-16 protocol
- * @RC_PROTO_RC6_6A_20: Philips RC6-6A-20 protocol
- * @RC_PROTO_RC6_6A_24: Philips RC6-6A-24 protocol
- * @RC_PROTO_RC6_6A_32: Philips RC6-6A-32 protocol
- * @RC_PROTO_RC6_MCE: MCE (Philips RC6-6A-32 subtype) protocol
- * @RC_PROTO_SHARP: Sharp protocol
- * @RC_PROTO_XMP: XMP protocol
- * @RC_PROTO_CEC: CEC protocol
- */
-enum rc_proto {
-	RC_PROTO_UNKNOWN	= 0,
-	RC_PROTO_OTHER		= 1,
-	RC_PROTO_RC5		= 2,
-	RC_PROTO_RC5X_20	= 3,
-	RC_PROTO_RC5_SZ		= 4,
-	RC_PROTO_JVC		= 5,
-	RC_PROTO_SONY12		= 6,
-	RC_PROTO_SONY15		= 7,
-	RC_PROTO_SONY20		= 8,
-	RC_PROTO_NEC		= 9,
-	RC_PROTO_NECX		= 10,
-	RC_PROTO_NEC32		= 11,
-	RC_PROTO_SANYO		= 12,
-	RC_PROTO_MCIR2_KBD	= 13,
-	RC_PROTO_MCIR2_MSE	= 14,
-	RC_PROTO_RC6_0		= 15,
-	RC_PROTO_RC6_6A_20	= 16,
-	RC_PROTO_RC6_6A_24	= 17,
-	RC_PROTO_RC6_6A_32	= 18,
-	RC_PROTO_RC6_MCE	= 19,
-	RC_PROTO_SHARP		= 20,
-	RC_PROTO_XMP		= 21,
-	RC_PROTO_CEC		= 22,
-};
+#include <uapi/linux/lirc.h>
 
 #define RC_PROTO_BIT_NONE		0ULL
 #define RC_PROTO_BIT_UNKNOWN		BIT_ULL(RC_PROTO_UNKNOWN)
diff --git a/include/media/v4l2-tpg.h b/include/media/tpg/v4l2-tpg.h
index 13e49d85cae3..823fadede7bf 100644
--- a/include/media/v4l2-tpg.h
+++ b/include/media/tpg/v4l2-tpg.h
@@ -26,8 +26,51 @@
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/videodev2.h>
-#include <media/v4l2-tpg-colors.h>
 
+struct tpg_rbg_color8 {
+	unsigned char r, g, b;
+};
+
+struct tpg_rbg_color16 {
+	__u16 r, g, b;
+};
+
+enum tpg_color {
+	TPG_COLOR_CSC_WHITE,
+	TPG_COLOR_CSC_YELLOW,
+	TPG_COLOR_CSC_CYAN,
+	TPG_COLOR_CSC_GREEN,
+	TPG_COLOR_CSC_MAGENTA,
+	TPG_COLOR_CSC_RED,
+	TPG_COLOR_CSC_BLUE,
+	TPG_COLOR_CSC_BLACK,
+	TPG_COLOR_75_YELLOW,
+	TPG_COLOR_75_CYAN,
+	TPG_COLOR_75_GREEN,
+	TPG_COLOR_75_MAGENTA,
+	TPG_COLOR_75_RED,
+	TPG_COLOR_75_BLUE,
+	TPG_COLOR_100_WHITE,
+	TPG_COLOR_100_YELLOW,
+	TPG_COLOR_100_CYAN,
+	TPG_COLOR_100_GREEN,
+	TPG_COLOR_100_MAGENTA,
+	TPG_COLOR_100_RED,
+	TPG_COLOR_100_BLUE,
+	TPG_COLOR_100_BLACK,
+	TPG_COLOR_TEXTFG,
+	TPG_COLOR_TEXTBG,
+	TPG_COLOR_RANDOM,
+	TPG_COLOR_RAMP,
+	TPG_COLOR_MAX = TPG_COLOR_RAMP + 256
+};
+
+extern const struct tpg_rbg_color8 tpg_colors[TPG_COLOR_MAX];
+extern const unsigned short tpg_rec709_to_linear[255 * 16 + 1];
+extern const unsigned short tpg_linear_to_rec709[255 * 16 + 1];
+extern const struct tpg_rbg_color16 tpg_csc_colors[V4L2_COLORSPACE_DCI_P3 + 1]
+					  [V4L2_XFER_FUNC_SMPTE2084 + 1]
+					  [TPG_COLOR_CSC_BLACK + 1];
 enum tpg_pattern {
 	TPG_PAT_75_COLORBAR,
 	TPG_PAT_100_COLORBAR,
diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h
index 78f0654d9c3d..df76ac8e658c 100644
--- a/include/media/tuner-types.h
+++ b/include/media/tuner-types.h
@@ -171,6 +171,21 @@ struct tuner_params {
 	struct tuner_range *ranges;
 };
 
+/**
+ * struct tunertype - describes the known tuners.
+ *
+ * @name:	string with the tuner's name.
+ * @count:	size of &struct tuner_params array.
+ * @params:	pointer to &struct tuner_params array.
+ *
+ * @min:	minimal tuner frequency, in 62.5 kHz step.
+ *		should be multiplied to 16 to convert to MHz.
+ * @max:	minimal tuner frequency, in 62.5 kHz step.
+ *		Should be multiplied to 16 to convert to MHz.
+ * @stepsize:	frequency step, in Hz.
+ * @initdata:	optional byte sequence to initialize the tuner.
+ * @sleepdata:	optional byte sequence to power down the tuner.
+ */
 struct tunertype {
 	char *name;
 	unsigned int count;
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index 6152434cbe82..1592d323c577 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -28,7 +28,7 @@ struct v4l2_async_notifier;
  *	in order to identify a match
  *
  * @V4L2_ASYNC_MATCH_CUSTOM: Match will use the logic provided by &struct
- * 	v4l2_async_subdev.match ops
+ *	v4l2_async_subdev.match ops
  * @V4L2_ASYNC_MATCH_DEVNAME: Match will use the device name
  * @V4L2_ASYNC_MATCH_I2C: Match will check for I2C adapter ID and address
  * @V4L2_ASYNC_MATCH_FWNODE: Match will use firmware node
@@ -48,6 +48,31 @@ enum v4l2_async_match_type {
  *
  * @match_type:	type of match that will be used
  * @match:	union of per-bus type matching data sets
+ * @match.fwnode:
+ *		pointer to &struct fwnode_handle to be matched.
+ *		Used if @match_type is %V4L2_ASYNC_MATCH_FWNODE.
+ * @match.device_name:
+ *		string containing the device name to be matched.
+ *		Used if @match_type is %V4L2_ASYNC_MATCH_DEVNAME.
+ * @match.i2c:	embedded struct with I2C parameters to be matched.
+ *		Both @match.i2c.adapter_id and @match.i2c.address
+ *		should be matched.
+ *		Used if @match_type is %V4L2_ASYNC_MATCH_I2C.
+ * @match.i2c.adapter_id:
+ *		I2C adapter ID to be matched.
+ *		Used if @match_type is %V4L2_ASYNC_MATCH_I2C.
+ * @match.i2c.address:
+ *		I2C address to be matched.
+ *		Used if @match_type is %V4L2_ASYNC_MATCH_I2C.
+ * @match.custom:
+ *		Driver-specific match criteria.
+ *		Used if @match_type is %V4L2_ASYNC_MATCH_CUSTOM.
+ * @match.custom.match:
+ *		Driver-specific match function to be used if
+ *		%V4L2_ASYNC_MATCH_CUSTOM.
+ * @match.custom.priv:
+ *		Driver-specific private struct with match parameters
+ *		to be used if %V4L2_ASYNC_MATCH_CUSTOM.
  * @list:	used to link struct v4l2_async_subdev objects, waiting to be
  *		probed, to a notifier->waiting list
  *
@@ -58,12 +83,8 @@ enum v4l2_async_match_type {
 struct v4l2_async_subdev {
 	enum v4l2_async_match_type match_type;
 	union {
-		struct {
-			struct fwnode_handle *fwnode;
-		} fwnode;
-		struct {
-			const char *name;
-		} device_name;
+		struct fwnode_handle *fwnode;
+		const char *device_name;
 		struct {
 			int adapter_id;
 			unsigned short address;
@@ -167,7 +188,7 @@ void v4l2_async_notifier_cleanup(struct v4l2_async_notifier *notifier);
 
 /**
  * v4l2_async_register_subdev - registers a sub-device to the asynchronous
- * 	subdevice framework
+ *	subdevice framework
  *
  * @sd: pointer to &struct v4l2_subdev
  */
@@ -197,7 +218,7 @@ int __must_check v4l2_async_register_subdev_sensor_common(
 
 /**
  * v4l2_async_unregister_subdev - unregisters a sub-device to the asynchronous
- * 	subdevice framework
+ *	subdevice framework
  *
  * @sd: pointer to &struct v4l2_subdev
  */
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index aac8b7b6e691..e0d95a7c5d48 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -28,7 +28,7 @@
 
 #include <media/v4l2-dev.h>
 
-/* Common printk constucts for v4l-i2c drivers. These macros create a unique
+/* Common printk constructs for v4l-i2c drivers. These macros create a unique
    prefix consisting of the driver name, the adapter number and the i2c
    address. */
 #define v4l_printk(level, name, adapter, addr, fmt, arg...) \
@@ -50,7 +50,7 @@
 /* These three macros assume that the debug level is set with a module
    parameter called 'debug'. */
 #define v4l_dbg(level, debug, client, fmt, arg...)			     \
-	do { 								     \
+	do {								     \
 		if (debug >= (level))					     \
 			v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
 	} while (0)
@@ -80,9 +80,9 @@
 /* These three macros assume that the debug level is set with a module
    parameter called 'debug'. */
 #define v4l2_dbg(level, debug, dev, fmt, arg...)			\
-	do { 								\
+	do {								\
 		if (debug >= (level))					\
-			v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); 	\
+			v4l2_printk(KERN_DEBUG, dev, fmt , ## arg);	\
 	} while (0)
 
 /**
@@ -127,7 +127,7 @@ struct v4l2_subdev_ops;
  * @client_type:  name of the chip that's on the adapter.
  * @addr: I2C address. If zero, it will use @probe_addrs
  * @probe_addrs: array with a list of address. The last entry at such
- * 	array should be %I2C_CLIENT_END.
+ *	array should be %I2C_CLIENT_END.
  *
  * returns a &struct v4l2_subdev pointer.
  */
@@ -146,7 +146,7 @@ struct i2c_board_info;
  * @info: pointer to struct i2c_board_info used to replace the irq,
  *	 platform_data and addr arguments.
  * @probe_addrs: array with a list of address. The last entry at such
- * 	array should be %I2C_CLIENT_END.
+ *	array should be %I2C_CLIENT_END.
  *
  * returns a &struct v4l2_subdev pointer.
  */
@@ -174,17 +174,43 @@ void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
  */
 unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd);
 
+/**
+ * enum v4l2_i2c_tuner_type - specifies the range of tuner address that
+ *	should be used when seeking for I2C devices.
+ *
+ * @ADDRS_RADIO:		Radio tuner addresses.
+ *				Represent the following I2C addresses:
+ *				0x10 (if compiled with tea5761 support)
+ *				and 0x60.
+ * @ADDRS_DEMOD:		Demod tuner addresses.
+ *				Represent the following I2C addresses:
+ *				0x42, 0x43, 0x4a and 0x4b.
+ * @ADDRS_TV:			TV tuner addresses.
+ *				Represent the following I2C addresses:
+ *				0x42, 0x43, 0x4a, 0x4b, 0x60, 0x61, 0x62,
+ *				0x63 and 0x64.
+ * @ADDRS_TV_WITH_DEMOD:	TV tuner addresses if demod is present, this
+ *				excludes addresses used by the demodulator
+ *				from the list of candidates.
+ *				Represent the following I2C addresses:
+ *				0x60, 0x61, 0x62, 0x63 and 0x64.
+ *
+ * NOTE: All I2C addresses above use the 7-bit notation.
+ */
 enum v4l2_i2c_tuner_type {
-	ADDRS_RADIO,	/* Radio tuner addresses */
-	ADDRS_DEMOD,	/* Demod tuner addresses */
-	ADDRS_TV,	/* TV tuner addresses */
-	/* TV tuner addresses if demod is present, this excludes
-	   addresses used by the demodulator from the list of
-	   candidates. */
+	ADDRS_RADIO,
+	ADDRS_DEMOD,
+	ADDRS_TV,
 	ADDRS_TV_WITH_DEMOD,
 };
-/* Return a list of I2C tuner addresses to probe. Use only if the tuner
-   addresses are unknown. */
+/**
+ * v4l2_i2c_tuner_addrs - Return a list of I2C tuner addresses to probe.
+ *
+ * @type: type of the tuner to seek, as defined by
+ *	  &enum v4l2_i2c_tuner_type.
+ *
+ * NOTE: Use only if the tuner addresses are unknown.
+ */
 const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type);
 
 /* ------------------------------------------------------------------------- */
@@ -224,10 +250,14 @@ void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
 
 /* ------------------------------------------------------------------------- */
 
-/* Note: these remaining ioctls/structs should be removed as well, but they are
-   still used in tuner-simple.c (TUNER_SET_CONFIG), cx18/ivtv (RESET) and
-   v4l2-int-device.h (v4l2_routing). To remove these ioctls some more cleanup
-   is needed in those modules. */
+/*
+ * FIXME: these remaining ioctls/structs should be removed as well, but they
+ * are still used in tuner-simple.c (TUNER_SET_CONFIG) and cx18/ivtv (RESET).
+ * To remove these ioctls some more cleanup is needed in those modules.
+ *
+ * It doesn't make much sense on documenting them, as what we really want is
+ * to get rid of them.
+ */
 
 /* s_config */
 struct v4l2_priv_tun_config {
@@ -236,32 +266,79 @@ struct v4l2_priv_tun_config {
 };
 #define TUNER_SET_CONFIG           _IOW('d', 92, struct v4l2_priv_tun_config)
 
-#define VIDIOC_INT_RESET            	_IOW ('d', 102, u32)
-
-struct v4l2_routing {
-	u32 input;
-	u32 output;
-};
+#define VIDIOC_INT_RESET		_IOW ('d', 102, u32)
 
 /* ------------------------------------------------------------------------- */
 
 /* Miscellaneous helper functions */
 
-void v4l_bound_align_image(unsigned int *w, unsigned int wmin,
+/**
+ * v4l_bound_align_image - adjust video dimensions according to
+ *	a given constraints.
+ *
+ * @width:	pointer to width that will be adjusted if needed.
+ * @wmin:	minimum width.
+ * @wmax:	maximum width.
+ * @walign:	least significant bit on width.
+ * @height:	pointer to height that will be adjusted if needed.
+ * @hmin:	minimum height.
+ * @hmax:	maximum height.
+ * @halign:	least significant bit on width.
+ * @salign:	least significant bit for the image size (e. g.
+ *		:math:`width * height`).
+ *
+ * Clip an image to have @width between @wmin and @wmax, and @height between
+ * @hmin and @hmax, inclusive.
+ *
+ * Additionally, the @width will be a multiple of :math:`2^{walign}`,
+ * the @height will be a multiple of :math:`2^{halign}`, and the overall
+ * size :math:`width * height` will be a multiple of :math:`2^{salign}`.
+ *
+ * .. note::
+ *
+ *    #. The clipping rectangle may be shrunk or enlarged to fit the alignment
+ *       constraints.
+ *    #. @wmax must not be smaller than @wmin.
+ *    #. @hmax must not be smaller than @hmin.
+ *    #. The alignments must not be so high there are no possible image
+ *       sizes within the allowed bounds.
+ *    #. @wmin and @hmin must be at least 1 (don't use 0).
+ *    #. For @walign, @halign and @salign, if you don't care about a certain
+ *       alignment, specify ``0``, as :math:`2^0 = 1` and one byte alignment
+ *       is equivalent to no alignment.
+ *    #. If you only want to adjust downward, specify a maximum that's the
+ *       same as the initial value.
+ */
+void v4l_bound_align_image(unsigned int *width, unsigned int wmin,
 			   unsigned int wmax, unsigned int walign,
-			   unsigned int *h, unsigned int hmin,
+			   unsigned int *height, unsigned int hmin,
 			   unsigned int hmax, unsigned int halign,
 			   unsigned int salign);
 
-struct v4l2_discrete_probe {
-	const struct v4l2_frmsize_discrete	*sizes;
-	int					num_sizes;
-};
-
-const struct v4l2_frmsize_discrete *v4l2_find_nearest_format(
-		const struct v4l2_discrete_probe *probe,
-		s32 width, s32 height);
+/**
+ * v4l2_find_nearest_format - find the nearest format size among a discrete
+ *	set of resolutions.
+ *
+ * @sizes: array of &struct v4l2_frmsize_discrete image sizes.
+ * @num_sizes: length of @sizes array.
+ * @width: desired width.
+ * @height: desired height.
+ *
+ * Finds the closest resolution to minimize the width and height differences
+ * between what requested and the supported resolutions.
+ */
+const struct v4l2_frmsize_discrete *
+v4l2_find_nearest_format(const struct v4l2_frmsize_discrete *sizes,
+			  const size_t num_sizes,
+			  s32 width, s32 height);
 
+/**
+ * v4l2_get_timestamp - helper routine to get a timestamp to be used when
+ *	filling streaming metadata. Internally, it uses ktime_get_ts(),
+ *	which is the recommended way to get it.
+ *
+ * @tv: pointer to &struct timeval to be filled.
+ */
 void v4l2_get_timestamp(struct timeval *tv);
 
 #endif /* V4L2_COMMON_H_ */
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index a9ced6bbee55..05ebb9ef9e73 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -166,8 +166,15 @@ typedef void (*v4l2_ctrl_notify_fnc)(struct v4l2_ctrl *ctrl, void *priv);
  *		empty strings ("") correspond to non-existing menu items (this
  *		is in addition to the menu_skip_mask above). The last entry
  *		must be NULL.
+ *		Used only if the @type is %V4L2_CTRL_TYPE_MENU.
+ * @qmenu_int:	A 64-bit integer array for with integer menu items.
+ *		The size of array must be equal to the menu size, e. g.:
+ *		:math:`ceil(\frac{maximum - minimum}{step}) + 1`.
+ *		Used only if the @type is %V4L2_CTRL_TYPE_INTEGER_MENU.
  * @flags:	The control's flags.
- * @cur:	The control's current value.
+ * @cur:	Structure to store the current value.
+ * @cur.val:	The control's current value, if the @type is represented via
+ *		a u32 integer (see &enum v4l2_ctrl_type).
  * @val:	The control's new s32 value.
  * @priv:	The control's private pointer. For use by the driver. It is
  *		untouched by the control framework. Note that this pointer is
@@ -1139,7 +1146,7 @@ int v4l2_s_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
 
 /**
  * v4l2_ctrl_subdev_subscribe_event - Helper function to implement
- * 	as a &struct v4l2_subdev_core_ops subscribe_event function
+ *	as a &struct v4l2_subdev_core_ops subscribe_event function
  *	that just subscribes control events.
  *
  * @sd: pointer to &struct v4l2_subdev
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index fa99f6f66712..53f32022fabe 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -21,31 +21,63 @@
 
 #define VIDEO_MAJOR	81
 
-#define VFL_TYPE_GRABBER	0
-#define VFL_TYPE_VBI		1
-#define VFL_TYPE_RADIO		2
-#define VFL_TYPE_SUBDEV		3
-#define VFL_TYPE_SDR		4
-#define VFL_TYPE_TOUCH		5
-#define VFL_TYPE_MAX		6
-
-/* Is this a receiver, transmitter or mem-to-mem? */
-/* Ignored for VFL_TYPE_SUBDEV. */
-#define VFL_DIR_RX		0
-#define VFL_DIR_TX		1
-#define VFL_DIR_M2M		2
+/**
+ * enum vfl_devnode_type - type of V4L2 device node
+ *
+ * @VFL_TYPE_GRABBER:	for video input/output devices
+ * @VFL_TYPE_VBI:	for vertical blank data (i.e. closed captions, teletext)
+ * @VFL_TYPE_RADIO:	for radio tuners
+ * @VFL_TYPE_SUBDEV:	for V4L2 subdevices
+ * @VFL_TYPE_SDR:	for Software Defined Radio tuners
+ * @VFL_TYPE_TOUCH:	for touch sensors
+ */
+enum vfl_devnode_type {
+	VFL_TYPE_GRABBER	= 0,
+	VFL_TYPE_VBI		= 1,
+	VFL_TYPE_RADIO		= 2,
+	VFL_TYPE_SUBDEV		= 3,
+	VFL_TYPE_SDR		= 4,
+	VFL_TYPE_TOUCH		= 5,
+};
+#define VFL_TYPE_MAX VFL_TYPE_TOUCH
+
+/**
+ * enum  vfl_direction - Identifies if a &struct video_device corresponds
+ *	to a receiver, a transmitter or a mem-to-mem device.
+ *
+ * @VFL_DIR_RX:		device is a receiver.
+ * @VFL_DIR_TX:		device is a transmitter.
+ * @VFL_DIR_M2M:	device is a memory to memory device.
+ *
+ * Note: Ignored if &enum vfl_devnode_type is %VFL_TYPE_SUBDEV.
+ */
+enum vfl_devnode_direction {
+	VFL_DIR_RX,
+	VFL_DIR_TX,
+	VFL_DIR_M2M,
+};
 
 struct v4l2_ioctl_callbacks;
 struct video_device;
 struct v4l2_device;
 struct v4l2_ctrl_handler;
 
-/* Flag to mark the video_device struct as registered.
-   Drivers can clear this flag if they want to block all future
-   device access. It is cleared by video_unregister_device. */
-#define V4L2_FL_REGISTERED	(0)
-/* file->private_data points to struct v4l2_fh */
-#define V4L2_FL_USES_V4L2_FH	(1)
+/**
+ * enum v4l2_video_device_flags - Flags used by &struct video_device
+ *
+ * @V4L2_FL_REGISTERED:
+ *	indicates that a &struct video_device is registered.
+ *	Drivers can clear this flag if they want to block all future
+ *	device access. It is cleared by video_unregister_device.
+ * @V4L2_FL_USES_V4L2_FH:
+ *	indicates that file->private_data points to &struct v4l2_fh.
+ *	This flag is set by the core when v4l2_fh_init() is called.
+ *	All new drivers should use it.
+ */
+enum v4l2_video_device_flags {
+	V4L2_FL_REGISTERED	= 0,
+	V4L2_FL_USES_V4L2_FH	= 1,
+};
 
 /* Priority helper functions */
 
@@ -166,7 +198,7 @@ struct v4l2_file_operations {
 
 /*
  * Newer version of video_device, handled by videodev2.c
- * 	This version moves redundant code from video device code to
+ *	This version moves redundant code from video device code to
  *	the common handler
  */
 
@@ -189,11 +221,12 @@ struct v4l2_file_operations {
  * @prio: pointer to &struct v4l2_prio_state with device's Priority state.
  *	 If NULL, then v4l2_dev->prio will be used.
  * @name: video device name
- * @vfl_type: V4L device type
+ * @vfl_type: V4L device type, as defined by &enum vfl_devnode_type
  * @vfl_dir: V4L receiver, transmitter or m2m
  * @minor: device node 'minor'. It is set to -1 if the registration failed
  * @num: number of the video device node
- * @flags: video device flags. Use bitops to set/clear/test flags
+ * @flags: video device flags. Use bitops to set/clear/test flags.
+ *	   Contains a set of &enum v4l2_video_device_flags.
  * @index: attribute to differentiate multiple indices on one physical device
  * @fh_lock: Lock for all v4l2_fhs
  * @fh_list: List of &struct v4l2_fh
@@ -237,8 +270,8 @@ struct video_device
 
 	/* device info */
 	char name[32];
-	int vfl_type;
-	int vfl_dir;
+	enum vfl_devnode_type vfl_type;
+	enum vfl_devnode_direction vfl_dir;
 	int minor;
 	u16 num;
 	unsigned long flags;
@@ -261,18 +294,30 @@ struct video_device
 	struct mutex *lock;
 };
 
-#define media_entity_to_video_device(__e) \
-	container_of(__e, struct video_device, entity)
-/* dev to video-device */
+/**
+ * media_entity_to_video_device - Returns a &struct video_device from
+ *	the &struct media_entity embedded on it.
+ *
+ * @entity: pointer to &struct media_entity
+ */
+#define media_entity_to_video_device(entity) \
+	container_of(entity, struct video_device, entity)
+
+/**
+ * to_video_device - Returns a &struct video_device from the
+ *	&struct device embedded on it.
+ *
+ * @cd: pointer to &struct device
+ */
 #define to_video_device(cd) container_of(cd, struct video_device, dev)
 
 /**
  * __video_register_device - register video4linux devices
  *
  * @vdev: struct video_device to register
- * @type: type of device to register
+ * @type: type of device to register, as defined by &enum vfl_devnode_type
  * @nr:   which device node number is desired:
- * 	(0 == /dev/video0, 1 == /dev/video1, ..., -1 == first free)
+ *	(0 == /dev/video0, 1 == /dev/video1, ..., -1 == first free)
  * @warn_if_nr_in_use: warn if the desired device node number
  *        was already in use and another number was chosen instead.
  * @owner: module that owns the video device node
@@ -289,43 +334,37 @@ struct video_device
  *
  * Returns 0 on success.
  *
- * Valid values for @type are:
- *
- *	- %VFL_TYPE_GRABBER - A frame grabber
- *	- %VFL_TYPE_VBI - Vertical blank data (undecoded)
- *	- %VFL_TYPE_RADIO - A radio card
- *	- %VFL_TYPE_SUBDEV - A subdevice
- *	- %VFL_TYPE_SDR - Software Defined Radio
- *	- %VFL_TYPE_TOUCH - A touch sensor
- *
  * .. note::
  *
  *	This function is meant to be used only inside the V4L2 core.
  *	Drivers should use video_register_device() or
  *	video_register_device_no_warn().
  */
-int __must_check __video_register_device(struct video_device *vdev, int type,
-		int nr, int warn_if_nr_in_use, struct module *owner);
+int __must_check __video_register_device(struct video_device *vdev,
+					 enum vfl_devnode_type type,
+					 int nr, int warn_if_nr_in_use,
+					 struct module *owner);
 
 /**
  *  video_register_device - register video4linux devices
  *
  * @vdev: struct video_device to register
- * @type: type of device to register
+ * @type: type of device to register, as defined by &enum vfl_devnode_type
  * @nr:   which device node number is desired:
- * 	(0 == /dev/video0, 1 == /dev/video1, ..., -1 == first free)
+ *	(0 == /dev/video0, 1 == /dev/video1, ..., -1 == first free)
  *
  * Internally, it calls __video_register_device(). Please see its
  * documentation for more details.
  *
  * .. note::
- * 	if video_register_device fails, the release() callback of
+ *	if video_register_device fails, the release() callback of
  *	&struct video_device structure is *not* called, so the caller
  *	is responsible for freeing any data. Usually that means that
  *	you video_device_release() should be called on failure.
  */
 static inline int __must_check video_register_device(struct video_device *vdev,
-		int type, int nr)
+						     enum vfl_devnode_type type,
+						     int nr)
 {
 	return __video_register_device(vdev, type, nr, 1, vdev->fops->owner);
 }
@@ -334,9 +373,9 @@ static inline int __must_check video_register_device(struct video_device *vdev,
  *  video_register_device_no_warn - register video4linux devices
  *
  * @vdev: struct video_device to register
- * @type: type of device to register
+ * @type: type of device to register, as defined by &enum vfl_devnode_type
  * @nr:   which device node number is desired:
- * 	(0 == /dev/video0, 1 == /dev/video1, ..., -1 == first free)
+ *	(0 == /dev/video0, 1 == /dev/video1, ..., -1 == first free)
  *
  * This function is identical to video_register_device() except that no
  * warning is issued if the desired device node number was already in use.
@@ -345,13 +384,14 @@ static inline int __must_check video_register_device(struct video_device *vdev,
  * documentation for more details.
  *
  * .. note::
- * 	if video_register_device fails, the release() callback of
+ *	if video_register_device fails, the release() callback of
  *	&struct video_device structure is *not* called, so the caller
  *	is responsible for freeing any data. Usually that means that
  *	you video_device_release() should be called on failure.
  */
-static inline int __must_check video_register_device_no_warn(
-		struct video_device *vdev, int type, int nr)
+static inline int __must_check
+video_register_device_no_warn(struct video_device *vdev,
+			      enum vfl_devnode_type type, int nr)
 {
 	return __video_register_device(vdev, type, nr, 0, vdev->fops->owner);
 }
@@ -383,7 +423,7 @@ void video_device_release(struct video_device *vdev);
 
 /**
  * video_device_release_empty - helper function to implement the
- * 	video_device->release\(\) callback.
+ *	video_device->release\(\) callback.
  *
  * @vdev: pointer to &struct video_device
  *
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index 8ffa94009d1a..0c9e4da55499 100644
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -38,7 +38,7 @@ struct v4l2_ctrl_handler;
  * @lock: lock this struct; can be used by the driver as well
  *	if this struct is embedded into a larger struct.
  * @name: unique device name, by default the driver name + bus ID
- * @notify: notify callback called by some sub-devices.
+ * @notify: notify operation called by some sub-devices.
  * @ctrl_handler: The control handler. May be %NULL.
  * @prio: Device's priority state
  * @ref: Keep track of the references to this struct.
@@ -56,7 +56,6 @@ struct v4l2_ctrl_handler;
  *    #) @dev->driver_data points to this struct.
  *    #) @dev might be %NULL if there is no parent device
  */
-
 struct v4l2_device {
 	struct device *dev;
 #if defined(CONFIG_MEDIA_CONTROLLER)
@@ -166,7 +165,7 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev);
  * v4l2_device_register_subdev - Registers a subdev with a v4l2 device.
  *
  * @v4l2_dev: pointer to struct &v4l2_device
- * @sd: pointer to struct &v4l2_subdev
+ * @sd: pointer to &struct v4l2_subdev
  *
  * While registered, the subdev module is marked as in-use.
  *
@@ -179,7 +178,7 @@ int __must_check v4l2_device_register_subdev(struct v4l2_device *v4l2_dev,
 /**
  * v4l2_device_unregister_subdev - Unregisters a subdev with a v4l2 device.
  *
- * @sd: pointer to struct &v4l2_subdev
+ * @sd: pointer to &struct v4l2_subdev
  *
  * .. note ::
  *
@@ -201,7 +200,7 @@ v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev);
 /**
  * v4l2_subdev_notify - Sends a notification to v4l2_device.
  *
- * @sd: pointer to struct &v4l2_subdev
+ * @sd: pointer to &struct v4l2_subdev
  * @notification: type of notification. Please notice that the notification
  *	type is driver-specific.
  * @arg: arguments for the notification. Those are specific to each
@@ -214,13 +213,43 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 		sd->v4l2_dev->notify(sd, notification, arg);
 }
 
-/* Iterate over all subdevs. */
+/* Helper macros to iterate over all subdevs. */
+
+/**
+ * v4l2_device_for_each_subdev - Helper macro that interates over all
+ *	sub-devices of a given &v4l2_device.
+ *
+ * @sd: pointer that will be filled by the macro with all
+ *	&struct v4l2_subdev pointer used as an iterator by the loop.
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ *
+ * This macro iterates over all sub-devices owned by the @v4l2_dev device.
+ * It acts as a for loop iterator and executes the next statement with
+ * the @sd variable pointing to each sub-device in turn.
+ */
 #define v4l2_device_for_each_subdev(sd, v4l2_dev)			\
 	list_for_each_entry(sd, &(v4l2_dev)->subdevs, list)
 
-/* Call the specified callback for all subdevs matching the condition.
-   Ignore any errors. Note that you cannot add or delete a subdev
-   while walking the subdevs list. */
+/**
+ * __v4l2_device_call_subdevs_p - Calls the specified operation for
+ *	all subdevs matching the condition.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @sd: pointer that will be filled by the macro with all
+ *	&struct v4l2_subdev pointer used as an iterator by the loop.
+ * @cond: condition to be match
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Ignore any errors.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
+ */
 #define __v4l2_device_call_subdevs_p(v4l2_dev, sd, cond, o, f, args...)	\
 	do {								\
 		list_for_each_entry((sd), &(v4l2_dev)->subdevs, list)	\
@@ -228,6 +257,24 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 				(sd)->ops->o->f((sd) , ##args);		\
 	} while (0)
 
+/**
+ * __v4l2_device_call_subdevs - Calls the specified operation for
+ *	all subdevs matching the condition.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @cond: condition to be match
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Ignore any errors.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
+ */
 #define __v4l2_device_call_subdevs(v4l2_dev, cond, o, f, args...)	\
 	do {								\
 		struct v4l2_subdev *__sd;				\
@@ -236,10 +283,30 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 						f , ##args);		\
 	} while (0)
 
-/* Call the specified callback for all subdevs matching the condition.
-   If the callback returns an error other than 0 or -ENOIOCTLCMD, then
-   return with that error code. Note that you cannot add or delete a
-   subdev while walking the subdevs list. */
+/**
+ * __v4l2_device_call_subdevs_until_err_p - Calls the specified operation for
+ *	all subdevs matching the condition.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @sd: pointer that will be filled by the macro with all
+ *	&struct v4l2_subdev sub-devices associated with @v4l2_dev.
+ * @cond: condition to be match
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Return:
+ *
+ * If the operation returns an error other than 0 or ``-ENOIOCTLCMD``
+ * for any subdevice, then abort and return with that error code, zero
+ * otherwise.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
+ */
 #define __v4l2_device_call_subdevs_until_err_p(v4l2_dev, sd, cond, o, f, args...) \
 ({									\
 	long __err = 0;							\
@@ -253,6 +320,28 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 	(__err == -ENOIOCTLCMD) ? 0 : __err;				\
 })
 
+/**
+ * __v4l2_device_call_subdevs_until_err - Calls the specified operation for
+ *	all subdevs matching the condition.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @cond: condition to be match
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Return:
+ *
+ * If the operation returns an error other than 0 or ``-ENOIOCTLCMD``
+ * for any subdevice, then abort and return with that error code,
+ * zero otherwise.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
+ */
 #define __v4l2_device_call_subdevs_until_err(v4l2_dev, cond, o, f, args...) \
 ({									\
 	struct v4l2_subdev *__sd;					\
@@ -260,9 +349,26 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 						f , ##args);		\
 })
 
-/* Call the specified callback for all subdevs matching grp_id (if 0, then
-   match them all). Ignore any errors. Note that you cannot add or delete
-   a subdev while walking the subdevs list. */
+/**
+ * v4l2_device_call_all - Calls the specified operation for
+ *	all subdevs matching the &v4l2_subdev.grp_id, as assigned
+ *	by the bridge driver.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @grpid: &struct v4l2_subdev->grp_id group ID to match.
+ *	    Use 0 to match them all.
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Ignore any errors.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
+ */
 #define v4l2_device_call_all(v4l2_dev, grpid, o, f, args...)		\
 	do {								\
 		struct v4l2_subdev *__sd;				\
@@ -272,10 +378,30 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 			##args);					\
 	} while (0)
 
-/* Call the specified callback for all subdevs matching grp_id (if 0, then
-   match them all). If the callback returns an error other than 0 or
-   -ENOIOCTLCMD, then return with that error code. Note that you cannot
-   add or delete a subdev while walking the subdevs list. */
+/**
+ * v4l2_device_call_until_err - Calls the specified operation for
+ *	all subdevs matching the &v4l2_subdev.grp_id, as assigned
+ *	by the bridge driver, until an error occurs.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @grpid: &struct v4l2_subdev->grp_id group ID to match.
+ *	   Use 0 to match them all.
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Return:
+ *
+ * If the operation returns an error other than 0 or ``-ENOIOCTLCMD``
+ * for any subdevice, then abort and return with that error code,
+ * zero otherwise.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
+ */
 #define v4l2_device_call_until_err(v4l2_dev, grpid, o, f, args...)	\
 ({									\
 	struct v4l2_subdev *__sd;					\
@@ -284,10 +410,24 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 			##args);					\
 })
 
-/*
- * Call the specified callback for all subdevs where grp_id & grpmsk != 0
- * (if grpmsk == `0, then match them all). Ignore any errors. Note that you
- * cannot add or delete a subdev while walking the subdevs list.
+/**
+ * v4l2_device_mask_call_all - Calls the specified operation for
+ *	all subdevices where a group ID matches a specified bitmask.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @grpmsk: bitmask to be checked against &struct v4l2_subdev->grp_id
+ *	    group ID to be matched. Use 0 to match them all.
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Ignore any errors.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
  */
 #define v4l2_device_mask_call_all(v4l2_dev, grpmsk, o, f, args...)	\
 	do {								\
@@ -298,11 +438,28 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 			##args);					\
 	} while (0)
 
-/*
- * Call the specified callback for all subdevs where grp_id & grpmsk != 0
- * (if grpmsk == 0, then match them all). If the callback returns an error
- * other than 0 or %-ENOIOCTLCMD, then return with that error code. Note that
- * you cannot add or delete a subdev while walking the subdevs list.
+/**
+ * v4l2_device_mask_call_until_err - Calls the specified operation for
+ *	all subdevices where a group ID matches a specified bitmask.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @grpmsk: bitmask to be checked against &struct v4l2_subdev->grp_id
+ *	    group ID to be matched. Use 0 to match them all.
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
+ * @args...: arguments for @f.
+ *
+ * Return:
+ *
+ * If the operation returns an error other than 0 or ``-ENOIOCTLCMD``
+ * for any subdevice, then abort and return with that error code,
+ * zero otherwise.
+ *
+ * Note: subdevs cannot be added or deleted while walking
+ * the subdevs list.
  */
 #define v4l2_device_mask_call_until_err(v4l2_dev, grpmsk, o, f, args...) \
 ({									\
@@ -312,9 +469,19 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 			##args);					\
 })
 
-/*
- * Does any subdev with matching grpid (or all if grpid == 0) has the given
- * op?
+
+/**
+ * v4l2_device_has_op - checks if any subdev with matching grpid has a
+ *	given ops.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @grpid: &struct v4l2_subdev->grp_id group ID to match.
+ *	   Use 0 to match them all.
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
  */
 #define v4l2_device_has_op(v4l2_dev, grpid, o, f)			\
 ({									\
@@ -331,9 +498,18 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev *sd,
 	__result;							\
 })
 
-/*
- * Does any subdev with matching grpmsk (or all if grpmsk == 0) has the given
- * op?
+/**
+ * v4l2_device_mask_has_op - checks if any subdev with matching group
+ *	mask has a given ops.
+ *
+ * @v4l2_dev: &struct v4l2_device owning the sub-devices to iterate over.
+ * @grpmsk: bitmask to be checked against &struct v4l2_subdev->grp_id
+ *	    group ID to be matched. Use 0 to match them all.
+ * @o: name of the element at &struct v4l2_subdev_ops that contains @f.
+ *     Each element there groups a set of operations functions.
+ * @f: operation function that will be called if @cond matches.
+ *	The operation functions are defined in groups, according to
+ *	each element at &struct v4l2_subdev_ops.
  */
 #define v4l2_device_mask_has_op(v4l2_dev, grpmsk, o, f)			\
 ({									\
diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h
index 61a18893e004..ebf00e07a515 100644
--- a/include/media/v4l2-dv-timings.h
+++ b/include/media/v4l2-dv-timings.h
@@ -203,13 +203,15 @@ struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
  */
 struct v4l2_fract v4l2_dv_timings_aspect_ratio(const struct v4l2_dv_timings *t);
 
-/*
- * reduce_fps - check if conditions for reduced fps are true.
- * bt - v4l2 timing structure
- * For different timings reduced fps is allowed if following conditions
- * are met -
- * For CVT timings: if reduced blanking v2 (vsync == 8) is true.
- * For CEA861 timings: if V4L2_DV_FL_CAN_REDUCE_FPS flag is true.
+/**
+ * can_reduce_fps - check if conditions for reduced fps are true.
+ * @bt: v4l2 timing structure
+ *
+ * For different timings reduced fps is allowed if the following conditions
+ * are met:
+ *
+ *   - For CVT timings: if reduced blanking v2 (vsync == 8) is true.
+ *   - For CEA861 timings: if %V4L2_DV_FL_CAN_REDUCE_FPS flag is true.
  */
 static inline  bool can_reduce_fps(struct v4l2_bt_timings *bt)
 {
diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h
index 6741910c3a18..17833e886e11 100644
--- a/include/media/v4l2-event.h
+++ b/include/media/v4l2-event.h
@@ -24,40 +24,6 @@
 #include <linux/videodev2.h>
 #include <linux/wait.h>
 
-/*
- * Overview:
- *
- * Events are subscribed per-filehandle. An event specification consists of a
- * type and is optionally associated with an object identified through the
- * 'id' field. So an event is uniquely identified by the (type, id) tuple.
- *
- * The v4l2-fh struct has a list of subscribed events. The v4l2_subscribed_event
- * struct is added to that list, one for every subscribed event.
- *
- * Each v4l2_subscribed_event struct ends with an array of v4l2_kevent structs.
- * This array (ringbuffer, really) is used to store any events raised by the
- * driver. The v4l2_kevent struct links into the 'available' list of the
- * v4l2_fh struct so VIDIOC_DQEVENT will know which event to dequeue first.
- *
- * Finally, if the event subscription is associated with a particular object
- * such as a V4L2 control, then that object needs to know about that as well
- * so that an event can be raised by that object. So the 'node' field can
- * be used to link the v4l2_subscribed_event struct into a list of that
- * object.
- *
- * So to summarize:
- *
- * struct v4l2_fh has two lists: one of the subscribed events, and one of the
- * pending events.
- *
- * struct v4l2_subscribed_event has a ringbuffer of raised (pending) events of
- * that particular type.
- *
- * If struct v4l2_subscribed_event is associated with a specific object, then
- * that object will have an internal list of struct v4l2_subscribed_event so
- * it knows who subscribed an event to that object.
- */
-
 struct v4l2_fh;
 struct v4l2_subdev;
 struct v4l2_subscribed_event;
@@ -218,7 +184,7 @@ int v4l2_event_subdev_unsubscribe(struct v4l2_subdev *sd,
 				  struct v4l2_event_subscription *sub);
 /**
  * v4l2_src_change_event_subscribe - helper function that calls
- * 	v4l2_event_subscribe() if the event is %V4L2_EVENT_SOURCE_CHANGE.
+ *	v4l2_event_subscribe() if the event is %V4L2_EVENT_SOURCE_CHANGE.
  *
  * @fh: pointer to struct v4l2_fh
  * @sub: pointer to &struct v4l2_event_subscription
diff --git a/include/media/v4l2-flash-led-class.h b/include/media/v4l2-flash-led-class.h
index 5c1d50f78e12..0a5e4518ca11 100644
--- a/include/media/v4l2-flash-led-class.h
+++ b/include/media/v4l2-flash-led-class.h
@@ -91,12 +91,24 @@ struct v4l2_flash {
 	struct v4l2_ctrl **ctrls;
 };
 
+/**
+ * v4l2_subdev_to_v4l2_flash - Returns a &struct v4l2_flash from the
+ * &struct v4l2_subdev embedded on it.
+ *
+ * @sd: pointer to &struct v4l2_subdev
+ */
 static inline struct v4l2_flash *v4l2_subdev_to_v4l2_flash(
 							struct v4l2_subdev *sd)
 {
 	return container_of(sd, struct v4l2_flash, sd);
 }
 
+/**
+ * v4l2_ctrl_to_v4l2_flash - Returns a &struct v4l2_flash from the
+ * &struct v4l2_ctrl embedded on it.
+ *
+ * @c: pointer to &struct v4l2_ctrl
+ */
 static inline struct v4l2_flash *v4l2_ctrl_to_v4l2_flash(struct v4l2_ctrl *c)
 {
 	return container_of(c->handler, struct v4l2_flash, hdl);
diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
index b5b465677d28..c228ec1c77cf 100644
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -81,7 +81,17 @@ struct v4l2_fwnode_bus_mipi_csi1 {
  * struct v4l2_fwnode_endpoint - the endpoint data structure
  * @base: fwnode endpoint of the v4l2_fwnode
  * @bus_type: bus type
- * @bus: bus configuration data structure
+ * @bus: union with bus configuration data structure
+ * @bus.parallel: embedded &struct v4l2_fwnode_bus_parallel.
+ *		  Used if the bus is parallel.
+ * @bus.mipi_csi1: embedded &struct v4l2_fwnode_bus_mipi_csi1.
+ *		   Used if the bus is MIPI Alliance's Camera Serial
+ *		   Interface version 1 (MIPI CSI1) or Standard
+ *		   Mobile Imaging Architecture's Compact Camera Port 2
+ *		   (SMIA CCP2).
+ * @bus.mipi_csi2: embedded &struct v4l2_fwnode_bus_mipi_csi2.
+ *		   Used if the bus is MIPI Alliance's Camera Serial
+ *		   Interface version 2 (MIPI CSI2).
  * @link_frequencies: array of supported link frequencies
  * @nr_of_link_frequencies: number of elements in link_frequenccies array
  */
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h
index 93f8afcb7a22..4d8626c468bc 100644
--- a/include/media/v4l2-mediabus.h
+++ b/include/media/v4l2-mediabus.h
@@ -12,6 +12,8 @@
 #define V4L2_MEDIABUS_H
 
 #include <linux/v4l2-mediabus.h>
+#include <linux/bitops.h>
+
 
 /* Parallel flags */
 /*
@@ -20,44 +22,44 @@
  * horizontal and vertical synchronisation. In "Slave mode" the host is
  * providing these signals to the slave.
  */
-#define V4L2_MBUS_MASTER			(1 << 0)
-#define V4L2_MBUS_SLAVE				(1 << 1)
+#define V4L2_MBUS_MASTER			BIT(0)
+#define V4L2_MBUS_SLAVE				BIT(1)
 /*
  * Signal polarity flags
  * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
  * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
  * configuration of hardware that uses [HV]REF signals
  */
-#define V4L2_MBUS_HSYNC_ACTIVE_HIGH		(1 << 2)
-#define V4L2_MBUS_HSYNC_ACTIVE_LOW		(1 << 3)
-#define V4L2_MBUS_VSYNC_ACTIVE_HIGH		(1 << 4)
-#define V4L2_MBUS_VSYNC_ACTIVE_LOW		(1 << 5)
-#define V4L2_MBUS_PCLK_SAMPLE_RISING		(1 << 6)
-#define V4L2_MBUS_PCLK_SAMPLE_FALLING		(1 << 7)
-#define V4L2_MBUS_DATA_ACTIVE_HIGH		(1 << 8)
-#define V4L2_MBUS_DATA_ACTIVE_LOW		(1 << 9)
+#define V4L2_MBUS_HSYNC_ACTIVE_HIGH		BIT(2)
+#define V4L2_MBUS_HSYNC_ACTIVE_LOW		BIT(3)
+#define V4L2_MBUS_VSYNC_ACTIVE_HIGH		BIT(4)
+#define V4L2_MBUS_VSYNC_ACTIVE_LOW		BIT(5)
+#define V4L2_MBUS_PCLK_SAMPLE_RISING		BIT(6)
+#define V4L2_MBUS_PCLK_SAMPLE_FALLING		BIT(7)
+#define V4L2_MBUS_DATA_ACTIVE_HIGH		BIT(8)
+#define V4L2_MBUS_DATA_ACTIVE_LOW		BIT(9)
 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
-#define V4L2_MBUS_FIELD_EVEN_HIGH		(1 << 10)
+#define V4L2_MBUS_FIELD_EVEN_HIGH		BIT(10)
 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
-#define V4L2_MBUS_FIELD_EVEN_LOW		(1 << 11)
+#define V4L2_MBUS_FIELD_EVEN_LOW		BIT(11)
 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
-#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH	(1 << 12)
-#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW		(1 << 13)
+#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH		BIT(12)
+#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW		BIT(13)
 
 /* Serial flags */
 /* How many lanes the client can use */
-#define V4L2_MBUS_CSI2_1_LANE			(1 << 0)
-#define V4L2_MBUS_CSI2_2_LANE			(1 << 1)
-#define V4L2_MBUS_CSI2_3_LANE			(1 << 2)
-#define V4L2_MBUS_CSI2_4_LANE			(1 << 3)
+#define V4L2_MBUS_CSI2_1_LANE			BIT(0)
+#define V4L2_MBUS_CSI2_2_LANE			BIT(1)
+#define V4L2_MBUS_CSI2_3_LANE			BIT(2)
+#define V4L2_MBUS_CSI2_4_LANE			BIT(3)
 /* On which channels it can send video data */
-#define V4L2_MBUS_CSI2_CHANNEL_0		(1 << 4)
-#define V4L2_MBUS_CSI2_CHANNEL_1		(1 << 5)
-#define V4L2_MBUS_CSI2_CHANNEL_2		(1 << 6)
-#define V4L2_MBUS_CSI2_CHANNEL_3		(1 << 7)
+#define V4L2_MBUS_CSI2_CHANNEL_0		BIT(4)
+#define V4L2_MBUS_CSI2_CHANNEL_1		BIT(5)
+#define V4L2_MBUS_CSI2_CHANNEL_2		BIT(6)
+#define V4L2_MBUS_CSI2_CHANNEL_3		BIT(7)
 /* Does it support only continuous or also non-continuous clock mode */
-#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK		(1 << 8)
-#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK	(1 << 9)
+#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK		BIT(8)
+#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK	BIT(9)
 
 #define V4L2_MBUS_CSI2_LANES		(V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \
 					 V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE)
@@ -91,6 +93,13 @@ struct v4l2_mbus_config {
 	unsigned int flags;
 };
 
+/**
+ * v4l2_fill_pix_format - Ancillary routine that fills a &struct
+ *	v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
+ *
+ * @pix_fmt:	pointer to &struct v4l2_pix_format to be filled
+ * @mbus_fmt:	pointer to &struct v4l2_mbus_framefmt to be used as model
+ */
 static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
 				const struct v4l2_mbus_framefmt *mbus_fmt)
 {
@@ -103,6 +112,15 @@ static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
 	pix_fmt->xfer_func = mbus_fmt->xfer_func;
 }
 
+/**
+ * v4l2_fill_pix_format - Ancillary routine that fills a &struct
+ *	v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
+ *	data format code.
+ *
+ * @mbus_fmt:	pointer to &struct v4l2_mbus_framefmt to be filled
+ * @pix_fmt:	pointer to &struct v4l2_pix_format to be used as model
+ * @code:	data format code (from &enum v4l2_mbus_pixelcode)
+ */
 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
 			   const struct v4l2_pix_format *pix_fmt,
 			   u32 code)
@@ -117,6 +135,13 @@ static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
 	mbus_fmt->code = code;
 }
 
+/**
+ * v4l2_fill_pix_format - Ancillary routine that fills a &struct
+ *	v4l2_pix_format_mplane fields from a media bus structure.
+ *
+ * @pix_mp_fmt:	pointer to &struct v4l2_pix_format_mplane to be filled
+ * @mbus_fmt:	pointer to &struct v4l2_mbus_framefmt to be used as model
+ */
 static inline void v4l2_fill_pix_format_mplane(
 				struct v4l2_pix_format_mplane *pix_mp_fmt,
 				const struct v4l2_mbus_framefmt *mbus_fmt)
@@ -130,6 +155,13 @@ static inline void v4l2_fill_pix_format_mplane(
 	pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
 }
 
+/**
+ * v4l2_fill_pix_format - Ancillary routine that fills a &struct
+ *	v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
+ *
+ * @mbus_fmt:	pointer to &struct v4l2_mbus_framefmt to be filled
+ * @pix_mp_fmt:	pointer to &struct v4l2_pix_format_mplane to be used as model
+ */
 static inline void v4l2_fill_mbus_format_mplane(
 				struct v4l2_mbus_framefmt *mbus_fmt,
 				const struct v4l2_pix_format_mplane *pix_mp_fmt)
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index ec399c770301..980a86c08fce 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -108,22 +108,31 @@ struct v4l2_decode_vbi_line {
  * not yet implemented) since ops provide proper type-checking.
  */
 
-/* Subdevice external IO pin configuration */
-#define V4L2_SUBDEV_IO_PIN_DISABLE	(1 << 0) /* ENABLE assumed */
-#define V4L2_SUBDEV_IO_PIN_OUTPUT	(1 << 1)
-#define V4L2_SUBDEV_IO_PIN_INPUT	(1 << 2)
-#define V4L2_SUBDEV_IO_PIN_SET_VALUE	(1 << 3) /* Set output value */
-#define V4L2_SUBDEV_IO_PIN_ACTIVE_LOW	(1 << 4) /* ACTIVE HIGH assumed */
+/**
+ * enum v4l2_subdev_io_pin_bits - Subdevice external IO pin configuration
+ *	bits
+ *
+ * @V4L2_SUBDEV_IO_PIN_DISABLE: disables a pin config. ENABLE assumed.
+ * @V4L2_SUBDEV_IO_PIN_OUTPUT: set it if pin is an output.
+ * @V4L2_SUBDEV_IO_PIN_INPUT: set it if pin is an input.
+ * @V4L2_SUBDEV_IO_PIN_SET_VALUE: to set the output value via
+ *				  &struct v4l2_subdev_io_pin_config->value.
+ * @V4L2_SUBDEV_IO_PIN_ACTIVE_LOW: pin active is bit 0.
+ *				   Otherwise, ACTIVE HIGH is assumed.
+ */
+enum v4l2_subdev_io_pin_bits {
+	V4L2_SUBDEV_IO_PIN_DISABLE	= 0,
+	V4L2_SUBDEV_IO_PIN_OUTPUT	= 1,
+	V4L2_SUBDEV_IO_PIN_INPUT	= 2,
+	V4L2_SUBDEV_IO_PIN_SET_VALUE	= 3,
+	V4L2_SUBDEV_IO_PIN_ACTIVE_LOW	= 4,
+};
 
 /**
  * struct v4l2_subdev_io_pin_config - Subdevice external IO pin configuration
  *
- * @flags: bitmask with flags for this pin's config:
- *	   %V4L2_SUBDEV_IO_PIN_DISABLE - disables a pin config,
- *	   %V4L2_SUBDEV_IO_PIN_OUTPUT - if pin is an output,
- *	   %V4L2_SUBDEV_IO_PIN_INPUT - if pin is an input,
- *	   %V4L2_SUBDEV_IO_PIN_SET_VALUE - to set the output value via @value
- *	   and %V4L2_SUBDEV_IO_PIN_ACTIVE_LOW - if active is 0.
+ * @flags: bitmask with flags for this pin's config, whose bits are defined by
+ *	   &enum v4l2_subdev_io_pin_bits.
  * @pin: Chip external IO pin to configure
  * @function: Internal signal pad/function to route to IO pin
  * @value: Initial value for pin - e.g. GPIO output value
@@ -140,7 +149,7 @@ struct v4l2_subdev_io_pin_config {
 /**
  * struct v4l2_subdev_core_ops - Define core ops callbacks for subdevs
  *
- * @log_status: callback for %VIDIOC_LOG_STATUS ioctl handler code.
+ * @log_status: callback for VIDIOC_LOG_STATUS() ioctl handler code.
  *
  * @s_io_pin_config: configure one or more chip I/O pins for chips that
  *	multiplex different internal signal pads out to IO pins.  This function
@@ -168,9 +177,9 @@ struct v4l2_subdev_io_pin_config {
  * @compat_ioctl32: called when a 32 bits application uses a 64 bits Kernel,
  *		    in order to fix data passed from/to userspace.
  *
- * @g_register: callback for %VIDIOC_G_REGISTER ioctl handler code.
+ * @g_register: callback for VIDIOC_DBG_G_REGISTER() ioctl handler code.
  *
- * @s_register: callback for %VIDIOC_G_REGISTER ioctl handler code.
+ * @s_register: callback for VIDIOC_DBG_S_REGISTER() ioctl handler code.
  *
  * @s_power: puts subdevice in power saving mode (on == 0) or normal operation
  *	mode (on == 1).
@@ -215,29 +224,48 @@ struct v4l2_subdev_core_ops {
  * struct v4l2_subdev_tuner_ops - Callbacks used when v4l device was opened
  *	in radio mode.
  *
- * @s_radio: callback for %VIDIOC_S_RADIO ioctl handler code.
+ * @s_radio: callback that switches the tuner to radio mode.
+ *	     drivers should explicitly call it when a tuner ops should
+ *	     operate on radio mode, before being able to handle it.
+ *	     Used on devices that have both AM/FM radio receiver and TV.
  *
- * @s_frequency: callback for %VIDIOC_S_FREQUENCY ioctl handler code.
+ * @s_frequency: callback for VIDIOC_S_FREQUENCY() ioctl handler code.
  *
- * @g_frequency: callback for %VIDIOC_G_FREQUENCY ioctl handler code.
+ * @g_frequency: callback for VIDIOC_G_FREQUENCY() ioctl handler code.
  *		 freq->type must be filled in. Normally done by video_ioctl2()
  *		 or the bridge driver.
  *
- * @enum_freq_bands: callback for %VIDIOC_ENUM_FREQ_BANDS ioctl handler code.
+ * @enum_freq_bands: callback for VIDIOC_ENUM_FREQ_BANDS() ioctl handler code.
  *
- * @g_tuner: callback for %VIDIOC_G_TUNER ioctl handler code.
+ * @g_tuner: callback for VIDIOC_G_TUNER() ioctl handler code.
  *
- * @s_tuner: callback for %VIDIOC_S_TUNER ioctl handler code. @vt->type must be
+ * @s_tuner: callback for VIDIOC_S_TUNER() ioctl handler code. @vt->type must be
  *	     filled in. Normally done by video_ioctl2 or the
  *	     bridge driver.
  *
- * @g_modulator: callback for %VIDIOC_G_MODULATOR ioctl handler code.
+ * @g_modulator: callback for VIDIOC_G_MODULATOR() ioctl handler code.
  *
- * @s_modulator: callback for %VIDIOC_S_MODULATOR ioctl handler code.
+ * @s_modulator: callback for VIDIOC_S_MODULATOR() ioctl handler code.
  *
  * @s_type_addr: sets tuner type and its I2C addr.
  *
  * @s_config: sets tda9887 specific stuff, like port1, port2 and qss
+ *
+ * .. note::
+ *
+ *	On devices that have both AM/FM and TV, it is up to the driver
+ *	to explicitly call s_radio when the tuner should be switched to
+ *	radio mode, before handling other &struct v4l2_subdev_tuner_ops
+ *	that would require it. An example of such usage is::
+ *
+ *	  static void s_frequency(void *priv, const struct v4l2_frequency *f)
+ *	  {
+ *		...
+ *		if (f.type == V4L2_TUNER_RADIO)
+ *			v4l2_device_call_all(v4l2_dev, 0, tuner, s_radio);
+ *		...
+ *		v4l2_device_call_all(v4l2_dev, 0, tuner, s_frequency);
+ *	  }
  */
 struct v4l2_subdev_tuner_ops {
 	int (*s_radio)(struct v4l2_subdev *sd);
@@ -285,25 +313,32 @@ struct v4l2_subdev_audio_ops {
 	int (*s_stream)(struct v4l2_subdev *sd, int enable);
 };
 
-/* Indicates the @length field specifies maximum data length. */
-#define V4L2_MBUS_FRAME_DESC_FL_LEN_MAX		(1U << 0)
-/*
- * Indicates that the format does not have line offsets, i.e. the
- * receiver should use 1D DMA.
+/**
+ * enum v4l2_mbus_frame_desc_entry - media bus frame description flags
+ *
+ * @V4L2_MBUS_FRAME_DESC_FL_LEN_MAX:
+ *	Indicates that &struct v4l2_mbus_frame_desc_entry->length field
+ *	specifies maximum data length.
+ * @V4L2_MBUS_FRAME_DESC_FL_BLOB:
+ *	Indicates that the format does not have line offsets, i.e.
+ *	the receiver should use 1D DMA.
  */
-#define V4L2_MBUS_FRAME_DESC_FL_BLOB		(1U << 1)
+enum v4l2_mbus_frame_desc_flags {
+	V4L2_MBUS_FRAME_DESC_FL_LEN_MAX	= BIT(0),
+	V4L2_MBUS_FRAME_DESC_FL_BLOB	= BIT(1),
+};
 
 /**
  * struct v4l2_mbus_frame_desc_entry - media bus frame description structure
  *
- * @flags: bitmask flags: %V4L2_MBUS_FRAME_DESC_FL_LEN_MAX and
- *			  %V4L2_MBUS_FRAME_DESC_FL_BLOB.
- * @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
- * @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB
- *	    is set
+ * @flags:	bitmask flags, as defined by &enum v4l2_mbus_frame_desc_flags.
+ * @pixelcode:	media bus pixel code, valid if @flags
+ *		%FRAME_DESC_FL_BLOB is not set.
+ * @length:	number of octets per frame, valid if @flags
+ *		%V4L2_MBUS_FRAME_DESC_FL_LEN_MAX is set.
  */
 struct v4l2_mbus_frame_desc_entry {
-	u16 flags;
+	enum v4l2_mbus_frame_desc_flags flags;
 	u32 pixelcode;
 	u32 length;
 };
@@ -332,9 +367,9 @@ struct v4l2_mbus_frame_desc {
  *	regarding clock frequency dividers, etc. If not used, then set flags
  *	to 0. If the frequency is not supported, then -EINVAL is returned.
  *
- * @g_std: callback for %VIDIOC_G_STD ioctl handler code.
+ * @g_std: callback for VIDIOC_G_STD() ioctl handler code.
  *
- * @s_std: callback for %VIDIOC_S_STD ioctl handler code.
+ * @s_std: callback for VIDIOC_S_STD() ioctl handler code.
  *
  * @s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by
  *	video input devices.
@@ -342,7 +377,7 @@ struct v4l2_mbus_frame_desc {
  * @g_std_output: get current standard for video OUTPUT devices. This is ignored
  *	by video input devices.
  *
- * @querystd: callback for %VIDIOC_QUERYSTD ioctl handler code.
+ * @querystd: callback for VIDIOC_QUERYSTD() ioctl handler code.
  *
  * @g_tvnorms: get &v4l2_std_id with all standards supported by the video
  *	CAPTURE device. This is ignored by video output devices.
@@ -358,13 +393,15 @@ struct v4l2_mbus_frame_desc {
  *
  * @g_pixelaspect: callback to return the pixelaspect ratio.
  *
- * @g_parm: callback for %VIDIOC_G_PARM ioctl handler code.
+ * @g_parm: callback for VIDIOC_G_PARM() ioctl handler code.
  *
- * @s_parm: callback for %VIDIOC_S_PARM ioctl handler code.
+ * @s_parm: callback for VIDIOC_S_PARM() ioctl handler code.
  *
- * @g_frame_interval: callback for %VIDIOC_G_FRAMEINTERVAL ioctl handler code.
+ * @g_frame_interval: callback for VIDIOC_SUBDEV_G_FRAME_INTERVAL()
+ *		      ioctl handler code.
  *
- * @s_frame_interval: callback for %VIDIOC_S_FRAMEINTERVAL ioctl handler code.
+ * @s_frame_interval: callback for VIDIOC_SUBDEV_S_FRAME_INTERVAL()
+ *		      ioctl handler code.
  *
  * @s_dv_timings: Set custom dv timings in the sub device. This is used
  *	when sub device is capable of setting detailed timing information
@@ -372,7 +409,7 @@ struct v4l2_mbus_frame_desc {
  *
  * @g_dv_timings: Get custom dv timings in the sub device.
  *
- * @query_dv_timings: callback for %VIDIOC_QUERY_DV_TIMINGS ioctl handler code.
+ * @query_dv_timings: callback for VIDIOC_QUERY_DV_TIMINGS() ioctl handler code.
  *
  * @g_mbus_config: get supported mediabus configurations
  *
@@ -443,7 +480,8 @@ struct v4l2_subdev_video_ops {
  *	member (to determine whether CC data from the first or second field
  *	should be obtained).
  *
- * @g_sliced_vbi_cap: callback for %VIDIOC_SLICED_VBI_CAP ioctl handler code.
+ * @g_sliced_vbi_cap: callback for VIDIOC_G_SLICED_VBI_CAP() ioctl handler
+ *		      code.
  *
  * @s_raw_fmt: setup the video encoder/decoder for raw VBI.
  *
@@ -610,30 +648,30 @@ struct v4l2_subdev_pad_config {
  * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations
  *
  * @init_cfg: initialize the pad config to default values
- * @enum_mbus_code: callback for %VIDIOC_SUBDEV_ENUM_MBUS_CODE ioctl handler
+ * @enum_mbus_code: callback for VIDIOC_SUBDEV_ENUM_MBUS_CODE() ioctl handler
  *		    code.
- * @enum_frame_size: callback for %VIDIOC_SUBDEV_ENUM_FRAME_SIZE ioctl handler
+ * @enum_frame_size: callback for VIDIOC_SUBDEV_ENUM_FRAME_SIZE() ioctl handler
  *		     code.
  *
- * @enum_frame_interval: callback for %VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL ioctl
+ * @enum_frame_interval: callback for VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL() ioctl
  *			 handler code.
  *
- * @get_fmt: callback for %VIDIOC_SUBDEV_G_FMT ioctl handler code.
+ * @get_fmt: callback for VIDIOC_SUBDEV_G_FMT() ioctl handler code.
  *
- * @set_fmt: callback for %VIDIOC_SUBDEV_S_FMT ioctl handler code.
+ * @set_fmt: callback for VIDIOC_SUBDEV_S_FMT() ioctl handler code.
  *
- * @get_selection: callback for %VIDIOC_SUBDEV_G_SELECTION ioctl handler code.
+ * @get_selection: callback for VIDIOC_SUBDEV_G_SELECTION() ioctl handler code.
  *
- * @set_selection: callback for %VIDIOC_SUBDEV_S_SELECTION ioctl handler code.
+ * @set_selection: callback for VIDIOC_SUBDEV_S_SELECTION() ioctl handler code.
  *
- * @get_edid: callback for %VIDIOC_SUBDEV_G_EDID ioctl handler code.
+ * @get_edid: callback for VIDIOC_SUBDEV_G_EDID() ioctl handler code.
  *
- * @set_edid: callback for %VIDIOC_SUBDEV_S_EDID ioctl handler code.
+ * @set_edid: callback for VIDIOC_SUBDEV_S_EDID() ioctl handler code.
  *
- * @dv_timings_cap: callback for %VIDIOC_SUBDEV_DV_TIMINGS_CAP ioctl handler
+ * @dv_timings_cap: callback for VIDIOC_SUBDEV_DV_TIMINGS_CAP() ioctl handler
  *		    code.
  *
- * @enum_dv_timings: callback for %VIDIOC_SUBDEV_ENUM_DV_TIMINGS ioctl handler
+ * @enum_dv_timings: callback for VIDIOC_SUBDEV_ENUM_DV_TIMINGS() ioctl handler
  *		     code.
  *
  * @link_validate: used by the media controller code to check if the links
@@ -766,7 +804,7 @@ struct v4l2_subdev_platform_data {
  * @list: List of sub-devices
  * @owner: The owner is the same as the driver's &struct device owner.
  * @owner_v4l2_dev: true if the &sd->owner matches the owner of @v4l2_dev->dev
- *	ownner. Initialized by v4l2_device_register_subdev().
+ *	owner. Initialized by v4l2_device_register_subdev().
  * @flags: subdev flags. Can be:
  *   %V4L2_SUBDEV_FL_IS_I2C - Set this flag if this subdev is a i2c device;
  *   %V4L2_SUBDEV_FL_IS_SPI - Set this flag if this subdev is a spi device;
diff --git a/include/media/v4l2-tpg-colors.h b/include/media/v4l2-tpg-colors.h
deleted file mode 100644
index 2a88d1fae0cd..000000000000
--- a/include/media/v4l2-tpg-colors.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * v4l2-tpg-colors.h - Color definitions for the test pattern generator
- *
- * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
- *
- * This program is free software; you may redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#ifndef _V4L2_TPG_COLORS_H_
-#define _V4L2_TPG_COLORS_H_
-
-struct color {
-	unsigned char r, g, b;
-};
-
-struct color16 {
-	int r, g, b;
-};
-
-enum tpg_color {
-	TPG_COLOR_CSC_WHITE,
-	TPG_COLOR_CSC_YELLOW,
-	TPG_COLOR_CSC_CYAN,
-	TPG_COLOR_CSC_GREEN,
-	TPG_COLOR_CSC_MAGENTA,
-	TPG_COLOR_CSC_RED,
-	TPG_COLOR_CSC_BLUE,
-	TPG_COLOR_CSC_BLACK,
-	TPG_COLOR_75_YELLOW,
-	TPG_COLOR_75_CYAN,
-	TPG_COLOR_75_GREEN,
-	TPG_COLOR_75_MAGENTA,
-	TPG_COLOR_75_RED,
-	TPG_COLOR_75_BLUE,
-	TPG_COLOR_100_WHITE,
-	TPG_COLOR_100_YELLOW,
-	TPG_COLOR_100_CYAN,
-	TPG_COLOR_100_GREEN,
-	TPG_COLOR_100_MAGENTA,
-	TPG_COLOR_100_RED,
-	TPG_COLOR_100_BLUE,
-	TPG_COLOR_100_BLACK,
-	TPG_COLOR_TEXTFG,
-	TPG_COLOR_TEXTBG,
-	TPG_COLOR_RANDOM,
-	TPG_COLOR_RAMP,
-	TPG_COLOR_MAX = TPG_COLOR_RAMP + 256
-};
-
-extern const struct color tpg_colors[TPG_COLOR_MAX];
-extern const unsigned short tpg_rec709_to_linear[255 * 16 + 1];
-extern const unsigned short tpg_linear_to_rec709[255 * 16 + 1];
-extern const struct color16 tpg_csc_colors[V4L2_COLORSPACE_DCI_P3 + 1]
-					  [V4L2_XFER_FUNC_SMPTE2084 + 1]
-					  [TPG_COLOR_CSC_BLACK + 1];
-
-#endif
diff --git a/include/media/videobuf-dvb.h b/include/media/videobuf-dvb.h
index a14ac7711c92..c9c81990a56c 100644
--- a/include/media/videobuf-dvb.h
+++ b/include/media/videobuf-dvb.h
@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-#include <dvbdev.h>
-#include <dmxdev.h>
-#include <dvb_demux.h>
-#include <dvb_net.h>
-#include <dvb_frontend.h>
+#include <media/dvbdev.h>
+#include <media/dmxdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_net.h>
+#include <media/dvb_frontend.h>
 
 #ifndef _VIDEOBUF_DVB_H_
 #define	_VIDEOBUF_DVB_H_
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index e55efc62a950..aa16c064294f 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -16,6 +16,7 @@
 #include <linux/mutex.h>
 #include <linux/poll.h>
 #include <linux/dma-buf.h>
+#include <linux/bitops.h>
 
 #define VB2_MAX_FRAME	(32)
 #define VB2_MAX_PLANES	(8)
@@ -45,7 +46,7 @@ struct vb2_fileio_data;
 struct vb2_threadio_data;
 
 /**
- * struct vb2_mem_ops - memory handling/memory allocator operations
+ * struct vb2_mem_ops - memory handling/memory allocator operations.
  * @alloc:	allocate video memory and, optionally, allocator private data,
  *		return ERR_PTR() on failure or a pointer to allocator private,
  *		per-buffer data on success; the returned private structure
@@ -69,7 +70,7 @@ struct vb2_threadio_data;
  *		 argument to other ops in this structure.
  * @put_userptr: inform the allocator that a USERPTR buffer will no longer
  *		 be used.
- * @attach_dmabuf: attach a shared struct dma_buf for a hardware operation;
+ * @attach_dmabuf: attach a shared &struct dma_buf for a hardware operation;
  *		   used for DMABUF memory types; dev is the alloc device
  *		   dbuf is the shared dma_buf; returns ERR_PTR() on failure;
  *		   allocator private per-buffer structure on success;
@@ -145,28 +146,28 @@ struct vb2_mem_ops {
 };
 
 /**
- * struct vb2_plane - plane information
- * @mem_priv:	private data with this plane
- * @dbuf:	dma_buf - shared buffer object
+ * struct vb2_plane - plane information.
+ * @mem_priv:	private data with this plane.
+ * @dbuf:	dma_buf - shared buffer object.
  * @dbuf_mapped:	flag to show whether dbuf is mapped or not
- * @bytesused:	number of bytes occupied by data in the plane (payload)
- * @length:	size of this plane (NOT the payload) in bytes
+ * @bytesused:	number of bytes occupied by data in the plane (payload).
+ * @length:	size of this plane (NOT the payload) in bytes.
  * @min_length:	minimum required size of this plane (NOT the payload) in bytes.
  *		@length is always greater or equal to @min_length.
- * @offset:	when memory in the associated struct vb2_buffer is
- *		VB2_MEMORY_MMAP, equals the offset from the start of
+ * @m:		Union with memtype-specific data.
+ * @m.offset:	when memory in the associated struct vb2_buffer is
+ *		%VB2_MEMORY_MMAP, equals the offset from the start of
  *		the device memory for this plane (or is a "cookie" that
- *		should be passed to mmap() called on the video node)
- * @userptr:	when memory is VB2_MEMORY_USERPTR, a userspace pointer
- *		pointing to this plane
- * @fd:		when memory is VB2_MEMORY_DMABUF, a userspace file
- *		descriptor associated with this plane
- * @m:		Union with memtype-specific data (@offset, @userptr or
- *		@fd).
+ *		should be passed to mmap() called on the video node).
+ * @m.userptr:	when memory is %VB2_MEMORY_USERPTR, a userspace pointer
+ *		pointing to this plane.
+ * @m.fd:	when memory is %VB2_MEMORY_DMABUF, a userspace file
+ *		descriptor associated with this plane.
  * @data_offset:	offset in the plane to the start of data; usually 0,
- *		unless there is a header in front of the data
+ *		unless there is a header in front of the data.
+ *
  * Should contain enough information to be able to cover all the fields
- * of struct v4l2_plane at videodev2.h
+ * of &struct v4l2_plane at videodev2.h.
  */
 struct vb2_plane {
 	void			*mem_priv;
@@ -184,35 +185,35 @@ struct vb2_plane {
 };
 
 /**
- * enum vb2_io_modes - queue access methods
- * @VB2_MMAP:		driver supports MMAP with streaming API
- * @VB2_USERPTR:	driver supports USERPTR with streaming API
- * @VB2_READ:		driver supports read() style access
- * @VB2_WRITE:		driver supports write() style access
- * @VB2_DMABUF:		driver supports DMABUF with streaming API
+ * enum vb2_io_modes - queue access methods.
+ * @VB2_MMAP:		driver supports MMAP with streaming API.
+ * @VB2_USERPTR:	driver supports USERPTR with streaming API.
+ * @VB2_READ:		driver supports read() style access.
+ * @VB2_WRITE:		driver supports write() style access.
+ * @VB2_DMABUF:		driver supports DMABUF with streaming API.
  */
 enum vb2_io_modes {
-	VB2_MMAP	= (1 << 0),
-	VB2_USERPTR	= (1 << 1),
-	VB2_READ	= (1 << 2),
-	VB2_WRITE	= (1 << 3),
-	VB2_DMABUF	= (1 << 4),
+	VB2_MMAP	= BIT(0),
+	VB2_USERPTR	= BIT(1),
+	VB2_READ	= BIT(2),
+	VB2_WRITE	= BIT(3),
+	VB2_DMABUF	= BIT(4),
 };
 
 /**
- * enum vb2_buffer_state - current video buffer state
- * @VB2_BUF_STATE_DEQUEUED:	buffer under userspace control
- * @VB2_BUF_STATE_PREPARING:	buffer is being prepared in videobuf
- * @VB2_BUF_STATE_PREPARED:	buffer prepared in videobuf and by the driver
- * @VB2_BUF_STATE_QUEUED:	buffer queued in videobuf, but not in driver
- * @VB2_BUF_STATE_REQUEUEING:	re-queue a buffer to the driver
+ * enum vb2_buffer_state - current video buffer state.
+ * @VB2_BUF_STATE_DEQUEUED:	buffer under userspace control.
+ * @VB2_BUF_STATE_PREPARING:	buffer is being prepared in videobuf.
+ * @VB2_BUF_STATE_PREPARED:	buffer prepared in videobuf and by the driver.
+ * @VB2_BUF_STATE_QUEUED:	buffer queued in videobuf, but not in driver.
+ * @VB2_BUF_STATE_REQUEUEING:	re-queue a buffer to the driver.
  * @VB2_BUF_STATE_ACTIVE:	buffer queued in driver and possibly used
- *				in a hardware operation
+ *				in a hardware operation.
  * @VB2_BUF_STATE_DONE:		buffer returned from driver to videobuf, but
- *				not yet dequeued to userspace
+ *				not yet dequeued to userspace.
  * @VB2_BUF_STATE_ERROR:	same as above, but the operation on the buffer
  *				has ended with an error, which will be reported
- *				to the userspace when it is dequeued
+ *				to the userspace when it is dequeued.
  */
 enum vb2_buffer_state {
 	VB2_BUF_STATE_DEQUEUED,
@@ -228,15 +229,15 @@ enum vb2_buffer_state {
 struct vb2_queue;
 
 /**
- * struct vb2_buffer - represents a video buffer
- * @vb2_queue:		the queue to which this driver belongs
- * @index:		id number of the buffer
- * @type:		buffer type
- * @memory:		the method, in which the actual data is passed
+ * struct vb2_buffer - represents a video buffer.
+ * @vb2_queue:		pointer to &struct vb2_queue with the queue to
+ *			which this driver belongs.
+ * @index:		id number of the buffer.
+ * @type:		buffer type.
+ * @memory:		the method, in which the actual data is passed.
  * @num_planes:		number of planes in the buffer
- *			on an internal driver queue
- * @planes:		private per-plane information; do not change
- * @timestamp:		frame timestamp in ns
+ *			on an internal driver queue.
+ * @timestamp:		frame timestamp in ns.
  */
 struct vb2_buffer {
 	struct vb2_queue	*vb2_queue;
@@ -244,7 +245,6 @@ struct vb2_buffer {
 	unsigned int		type;
 	unsigned int		memory;
 	unsigned int		num_planes;
-	struct vb2_plane	planes[VB2_MAX_PLANES];
 	u64			timestamp;
 
 	/* private: internal use only
@@ -254,9 +254,11 @@ struct vb2_buffer {
 	 *			all buffers queued from userspace
 	 * done_entry:		entry on the list that stores all buffers ready
 	 *			to be dequeued to userspace
+	 * vb2_plane:		per-plane information; do not change
 	 */
 	enum vb2_buffer_state	state;
 
+	struct vb2_plane	planes[VB2_MAX_PLANES];
 	struct list_head	queued_entry;
 	struct list_head	done_entry;
 #ifdef CONFIG_VIDEO_ADV_DEBUG
@@ -292,7 +294,7 @@ struct vb2_buffer {
 };
 
 /**
- * struct vb2_ops - driver-specific callbacks
+ * struct vb2_ops - driver-specific callbacks.
  *
  * @queue_setup:	called from VIDIOC_REQBUFS() and VIDIOC_CREATE_BUFS()
  *			handlers before memory allocation. It can be called
@@ -358,8 +360,8 @@ struct vb2_buffer {
  *			the @buf_queue callback are to be returned by the driver
  *			by calling vb2_buffer_done() with %VB2_BUF_STATE_QUEUED.
  *			If you need a minimum number of buffers before you can
- *			start streaming, then set @min_buffers_needed in the
- *			vb2_queue structure. If that is non-zero then
+ *			start streaming, then set
+ *			&vb2_queue->min_buffers_needed. If that is non-zero then
  *			@start_streaming won't be called until at least that
  *			many buffers have been queued up by userspace.
  * @stop_streaming:	called when 'streaming' state must be disabled; driver
@@ -396,18 +398,18 @@ struct vb2_ops {
 };
 
 /**
- * struct vb2_buf_ops - driver-specific callbacks
+ * struct vb2_buf_ops - driver-specific callbacks.
  *
  * @verify_planes_array: Verify that a given user space structure contains
  *			enough planes for the buffer. This is called
  *			for each dequeued buffer.
- * @fill_user_buffer:	given a vb2_buffer fill in the userspace structure.
- *			For V4L2 this is a struct v4l2_buffer.
- * @fill_vb2_buffer:	given a userspace structure, fill in the vb2_buffer.
+ * @fill_user_buffer:	given a &vb2_buffer fill in the userspace structure.
+ *			For V4L2 this is a &struct v4l2_buffer.
+ * @fill_vb2_buffer:	given a userspace structure, fill in the &vb2_buffer.
  *			If the userspace structure is invalid, then this op
  *			will return an error.
  * @copy_timestamp:	copy the timestamp from a userspace structure to
- *			the vb2_buffer struct.
+ *			the &struct vb2_buffer.
  */
 struct vb2_buf_ops {
 	int (*verify_planes_array)(struct vb2_buffer *vb, const void *pb);
@@ -418,20 +420,21 @@ struct vb2_buf_ops {
 };
 
 /**
- * struct vb2_queue - a videobuf queue
+ * struct vb2_queue - a videobuf queue.
  *
  * @type:	private buffer type whose content is defined by the vb2-core
  *		caller. For example, for V4L2, it should match
- *		the types defined on enum &v4l2_buf_type
- * @io_modes:	supported io methods (see vb2_io_modes enum)
+ *		the types defined on &enum v4l2_buf_type.
+ * @io_modes:	supported io methods (see &enum vb2_io_modes).
+ * @alloc_devs:	&struct device memory type/allocator-specific per-plane device
  * @dev:	device to use for the default allocation context if the driver
  *		doesn't fill in the @alloc_devs array.
  * @dma_attrs:	DMA attributes to use for the DMA.
  * @bidirectional: when this flag is set the DMA direction for the buffers of
- *		this queue will be overridden with DMA_BIDIRECTIONAL direction.
+ *		this queue will be overridden with %DMA_BIDIRECTIONAL direction.
  *		This is useful in cases where the hardware (firmware) writes to
- *		a buffer which is mapped as read (DMA_TO_DEVICE), or reads from
- *		buffer which is mapped for write (DMA_FROM_DEVICE) in order
+ *		a buffer which is mapped as read (%DMA_TO_DEVICE), or reads from
+ *		buffer which is mapped for write (%DMA_FROM_DEVICE) in order
  *		to satisfy some internal hardware restrictions or adds a padding
  *		needed by the processing algorithm. In case the DMA mapping is
  *		not bidirectional but the hardware (firmware) trying to access
@@ -440,10 +443,10 @@ struct vb2_buf_ops {
  * @fileio_read_once:		report EOF after reading the first buffer
  * @fileio_write_immediately:	queue buffer after each write() call
  * @allow_zero_bytesused:	allow bytesused == 0 to be passed to the driver
- * @quirk_poll_must_check_waiting_for_buffers: Return POLLERR at poll when QBUF
+ * @quirk_poll_must_check_waiting_for_buffers: Return %POLLERR at poll when QBUF
  *              has not been called. This is a vb1 idiom that has been adopted
  *              also by vb2.
- * @lock:	pointer to a mutex that protects the vb2_queue struct. The
+ * @lock:	pointer to a mutex that protects the &struct vb2_queue. The
  *		driver can set this to a mutex to let the v4l2 core serialize
  *		the queuing ioctls. If the driver wants to handle locking
  *		itself, then this should be set to NULL. This lock is not used
@@ -454,17 +457,17 @@ struct vb2_buf_ops {
  *		drivers to easily associate an owner filehandle with the queue.
  * @ops:	driver-specific callbacks
  * @mem_ops:	memory allocator specific callbacks
- * @buf_ops:	callbacks to deliver buffer information
- *		between user-space and kernel-space
- * @drv_priv:	driver private data
+ * @buf_ops:	callbacks to deliver buffer information.
+ *		between user-space and kernel-space.
+ * @drv_priv:	driver private data.
  * @buf_struct_size: size of the driver-specific buffer structure;
  *		"0" indicates the driver doesn't want to use a custom buffer
- *		structure type. for example, sizeof(struct vb2_v4l2_buffer)
+ *		structure type. for example, ``sizeof(struct vb2_v4l2_buffer)``
  *		will be used for v4l2.
- * @timestamp_flags: Timestamp flags; V4L2_BUF_FLAG_TIMESTAMP_* and
- *		V4L2_BUF_FLAG_TSTAMP_SRC_*
+ * @timestamp_flags: Timestamp flags; ``V4L2_BUF_FLAG_TIMESTAMP_*`` and
+ *		``V4L2_BUF_FLAG_TSTAMP_SRC_*``
  * @gfp_flags:	additional gfp flags used when allocating the buffers.
- *		Typically this is 0, but it may be e.g. GFP_DMA or __GFP_DMA32
+ *		Typically this is 0, but it may be e.g. %GFP_DMA or %__GFP_DMA32
  *		to force the buffer allocation to a specific memory zone.
  * @min_buffers_needed: the minimum number of buffers needed before
  *		@start_streaming can be called. Used when a DMA engine
@@ -484,20 +487,19 @@ struct vb2_buf_ops {
  * @done_list:	list of buffers ready to be dequeued to userspace
  * @done_lock:	lock to protect done_list list
  * @done_wq:	waitqueue for processes waiting for buffers ready to be dequeued
- * @alloc_devs:	memory type/allocator-specific per-plane device
  * @streaming:	current streaming state
  * @start_streaming_called: @start_streaming was called successfully and we
  *		started streaming.
  * @error:	a fatal error occurred on the queue
  * @waiting_for_buffers: used in poll() to check if vb2 is still waiting for
  *		buffers. Only set for capture queues if qbuf has not yet been
- *		called since poll() needs to return POLLERR in that situation.
+ *		called since poll() needs to return %POLLERR in that situation.
  * @is_multiplanar: set if buffer type is multiplanar
  * @is_output:	set if buffer type is output
  * @copy_timestamp: set if vb2-core should set timestamps
  * @last_buffer_dequeued: used in poll() and DQBUF to immediately return if the
  *		last decoded buffer was already dequeued. Set for capture queues
- *		when a buffer with the V4L2_BUF_FLAG_LAST is dequeued.
+ *		when a buffer with the %V4L2_BUF_FLAG_LAST is dequeued.
  * @fileio:	file io emulator internal data, used only if emulator is active
  * @threadio:	thread io internal data, used only if thread is active
  */
@@ -525,6 +527,8 @@ struct vb2_queue {
 	gfp_t				gfp_flags;
 	u32				min_buffers_needed;
 
+	struct device			*alloc_devs[VB2_MAX_PLANES];
+
 	/* private: internal use only */
 	struct mutex			mmap_lock;
 	unsigned int			memory;
@@ -540,8 +544,6 @@ struct vb2_queue {
 	spinlock_t			done_lock;
 	wait_queue_head_t		done_wq;
 
-	struct device			*alloc_devs[VB2_MAX_PLANES];
-
 	unsigned int			streaming:1;
 	unsigned int			start_streaming_called:1;
 	unsigned int			error:1;
@@ -568,9 +570,10 @@ struct vb2_queue {
 };
 
 /**
- * vb2_plane_vaddr() - Return a kernel virtual address of a given plane
- * @vb:		vb2_buffer to which the plane in question belongs to
- * @plane_no:	plane number for which the address is to be returned
+ * vb2_plane_vaddr() - Return a kernel virtual address of a given plane.
+ * @vb:		pointer to &struct vb2_buffer to which the plane in
+ *		question belongs to.
+ * @plane_no:	plane number for which the address is to be returned.
  *
  * This function returns a kernel virtual address of a given plane if
  * such a mapping exist, NULL otherwise.
@@ -578,9 +581,10 @@ struct vb2_queue {
 void *vb2_plane_vaddr(struct vb2_buffer *vb, unsigned int plane_no);
 
 /**
- * vb2_plane_cookie() - Return allocator specific cookie for the given plane
- * @vb:		vb2_buffer to which the plane in question belongs to
- * @plane_no:	plane number for which the cookie is to be returned
+ * vb2_plane_cookie() - Return allocator specific cookie for the given plane.
+ * @vb:		pointer to &struct vb2_buffer to which the plane in
+ *		question belongs to.
+ * @plane_no:	plane number for which the cookie is to be returned.
  *
  * This function returns an allocator specific cookie for a given plane if
  * available, NULL otherwise. The allocator should provide some simple static
@@ -591,9 +595,11 @@ void *vb2_plane_vaddr(struct vb2_buffer *vb, unsigned int plane_no);
 void *vb2_plane_cookie(struct vb2_buffer *vb, unsigned int plane_no);
 
 /**
- * vb2_buffer_done() - inform videobuf that an operation on a buffer is finished
- * @vb:		vb2_buffer returned from the driver
- * @state:	either %VB2_BUF_STATE_DONE if the operation finished
+ * vb2_buffer_done() - inform videobuf that an operation on a buffer
+ *	is finished.
+ * @vb:		pointer to &struct vb2_buffer to be used.
+ * @state:	state of the buffer, as defined by &enum vb2_buffer_state.
+ *		Either %VB2_BUF_STATE_DONE if the operation finished
  *		successfully, %VB2_BUF_STATE_ERROR if the operation finished
  *		with an error or %VB2_BUF_STATE_QUEUED if the driver wants to
  *		requeue buffers. If start_streaming fails then it should return
@@ -614,8 +620,8 @@ void *vb2_plane_cookie(struct vb2_buffer *vb, unsigned int plane_no);
 void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state);
 
 /**
- * vb2_discard_done() - discard all buffers marked as DONE
- * @q:		videobuf2 queue
+ * vb2_discard_done() - discard all buffers marked as DONE.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * This function is intended to be used with suspend/resume operations. It
  * discards all 'done' buffers as they would be too old to be requested after
@@ -628,74 +634,83 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state);
 void vb2_discard_done(struct vb2_queue *q);
 
 /**
- * vb2_wait_for_all_buffers() - wait until all buffers are given back to vb2
- * @q:		videobuf2 queue
+ * vb2_wait_for_all_buffers() - wait until all buffers are given back to vb2.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * This function will wait until all buffers that have been given to the driver
  * by &vb2_ops->buf_queue are given back to vb2 with vb2_buffer_done(). It
- * doesn't call wait_prepare()/wait_finish() pair. It is intended to be called
- * with all locks taken, for example from &vb2_ops->stop_streaming callback.
+ * doesn't call &vb2_ops->wait_prepare/&vb2_ops->wait_finish pair.
+ * It is intended to be called with all locks taken, for example from
+ * &vb2_ops->stop_streaming callback.
  */
 int vb2_wait_for_all_buffers(struct vb2_queue *q);
 
 /**
- * vb2_core_querybuf() - query video buffer information
- * @q:		videobuf queue
- * @index:	id number of the buffer
- * @pb:		buffer struct passed from userspace
+ * vb2_core_querybuf() - query video buffer information.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @index:	id number of the buffer.
+ * @pb:		buffer struct passed from userspace.
+ *
+ * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
+ * internally by VB2 by an API-specific handler, like ``videobuf2-v4l2.h``.
  *
- * Should be called from vidioc_querybuf ioctl handler in driver.
  * The passed buffer should have been verified.
+ *
  * This function fills the relevant information for the userspace.
+ *
+ * Return: returns zero on success; an error code otherwise.
  */
 void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
 
 /**
- * vb2_core_reqbufs() - Initiate streaming
- * @q:		videobuf2 queue
- * @memory: memory type
- * @count: requested buffer count
+ * vb2_core_reqbufs() - Initiate streaming.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @memory:	memory type, as defined by &enum vb2_memory.
+ * @count:	requested buffer count.
  *
- * Should be called from vidioc_reqbufs ioctl handler of a driver.
+ * Videobuf2 core helper to implement VIDIOC_REQBUF() operation. It is called
+ * internally by VB2 by an API-specific handler, like ``videobuf2-v4l2.h``.
  *
  * This function:
  *
- * #) verifies streaming parameters passed from the userspace,
- * #) sets up the queue,
+ * #) verifies streaming parameters passed from the userspace;
+ * #) sets up the queue;
  * #) negotiates number of buffers and planes per buffer with the driver
- *    to be used during streaming,
- * #) allocates internal buffer structures (struct vb2_buffer), according to
- *    the agreed parameters,
+ *    to be used during streaming;
+ * #) allocates internal buffer structures (&struct vb2_buffer), according to
+ *    the agreed parameters;
  * #) for MMAP memory type, allocates actual video memory, using the
- *    memory handling/allocation routines provided during queue initialization
+ *    memory handling/allocation routines provided during queue initialization.
  *
  * If req->count is 0, all the memory will be freed instead.
- * If the queue has been allocated previously (by a previous vb2_reqbufs) call
- * and the queue is not busy, memory will be reallocated.
  *
- * The return values from this function are intended to be directly returned
- * from vidioc_reqbufs handler in driver.
+ * If the queue has been allocated previously by a previous vb2_core_reqbufs()
+ * call and the queue is not busy, memory will be reallocated.
+ *
+ * Return: returns zero on success; an error code otherwise.
  */
 int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
 		unsigned int *count);
 
 /**
  * vb2_core_create_bufs() - Allocate buffers and any required auxiliary structs
- * @q:		videobuf2 queue
- * @memory: memory type
- * @count: requested buffer count
- * @requested_planes: number of planes requested
- * @requested_sizes: array with the size of the planes
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @memory: memory type, as defined by &enum vb2_memory.
+ * @count: requested buffer count.
+ * @requested_planes: number of planes requested.
+ * @requested_sizes: array with the size of the planes.
+ *
+ * Videobuf2 core helper to implement VIDIOC_CREATE_BUFS() operation. It is
+ * called internally by VB2 by an API-specific handler, like
+ * ``videobuf2-v4l2.h``.
  *
- * Should be called from VIDIOC_CREATE_BUFS() ioctl handler of a driver.
  * This function:
  *
- * #) verifies parameter sanity
- * #) calls the .queue_setup() queue operation
- * #) performs any necessary memory allocations
+ * #) verifies parameter sanity;
+ * #) calls the &vb2_ops->queue_setup queue operation;
+ * #) performs any necessary memory allocations.
  *
- * Return: the return values from this function are intended to be directly
- * returned from VIDIOC_CREATE_BUFS() handler in driver.
+ * Return: returns zero on success; an error code otherwise.
  */
 int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
 			 unsigned int *count, unsigned int requested_planes,
@@ -703,57 +718,61 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
 
 /**
  * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
- *			to the kernel
- * @q:		videobuf2 queue
- * @index:	id number of the buffer
- * @pb:		buffer structure passed from userspace to vidioc_prepare_buf
- *		handler in driver
+ *			to the kernel.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @index:	id number of the buffer.
+ * @pb:		buffer structure passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
+ *
+ * Videobuf2 core helper to implement VIDIOC_PREPARE_BUF() operation. It is
+ * called internally by VB2 by an API-specific handler, like
+ * ``videobuf2-v4l2.h``.
  *
- * Should be called from vidioc_prepare_buf ioctl handler of a driver.
  * The passed buffer should have been verified.
- * This function calls buf_prepare callback in the driver (if provided),
- * in which driver-specific buffer initialization can be performed,
  *
- * The return values from this function are intended to be directly returned
- * from vidioc_prepare_buf handler in driver.
+ * This function calls vb2_ops->buf_prepare callback in the driver
+ * (if provided), in which driver-specific buffer initialization can
+ * be performed.
+ *
+ * Return: returns zero on success; an error code otherwise.
  */
 int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
 
 /**
  * vb2_core_qbuf() - Queue a buffer from userspace
  *
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  * @index:	id number of the buffer
- * @pb:		buffer structure passed from userspace to vidioc_qbuf handler
- *		in driver
+ * @pb:		buffer structure passed from userspace to
+ *		v4l2_ioctl_ops->vidioc_qbuf handler in driver
  *
- * Should be called from vidioc_qbuf ioctl handler of a driver.
- * The passed buffer should have been verified.
+ * Videobuf2 core helper to implement VIDIOC_QBUF() operation. It is called
+ * internally by VB2 by an API-specific handler, like ``videobuf2-v4l2.h``.
  *
  * This function:
  *
- * #) if necessary, calls buf_prepare callback in the driver (if provided), in
- *    which driver-specific buffer initialization can be performed,
+ * #) if necessary, calls &vb2_ops->buf_prepare callback in the driver
+ *    (if provided), in which driver-specific buffer initialization can
+ *    be performed;
  * #) if streaming is on, queues the buffer in driver by the means of
  *    &vb2_ops->buf_queue callback for processing.
  *
- * The return values from this function are intended to be directly returned
- * from vidioc_qbuf handler in driver.
+ * Return: returns zero on success; an error code otherwise.
  */
 int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb);
 
 /**
  * vb2_core_dqbuf() - Dequeue a buffer to the userspace
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue
  * @pindex:	pointer to the buffer index. May be NULL
- * @pb:		buffer structure passed from userspace to vidioc_dqbuf handler
- *		in driver
+ * @pb:		buffer structure passed from userspace to
+ *		v4l2_ioctl_ops->vidioc_dqbuf handler in driver.
  * @nonblocking: if true, this call will not sleep waiting for a buffer if no
  *		 buffers ready for dequeuing are present. Normally the driver
- *		 would be passing (file->f_flags & O_NONBLOCK) here
+ *		 would be passing (file->f_flags & O_NONBLOCK) here.
  *
- * Should be called from vidioc_dqbuf ioctl handler of a driver.
- * The passed buffer should have been verified.
+ * Videobuf2 core helper to implement VIDIOC_DQBUF() operation. It is called
+ * internally by VB2 by an API-specific handler, like ``videobuf2-v4l2.h``.
  *
  * This function:
  *
@@ -763,73 +782,108 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb);
  * #) the buffer struct members are filled with relevant information for
  *    the userspace.
  *
- * The return values from this function are intended to be directly returned
- * from vidioc_dqbuf handler in driver.
+ * Return: returns zero on success; an error code otherwise.
  */
 int vb2_core_dqbuf(struct vb2_queue *q, unsigned int *pindex, void *pb,
 		   bool nonblocking);
 
+/**
+ * vb2_core_streamon() - Implements VB2 stream ON logic
+ *
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue
+ * @type:	type of the queue to be started.
+ *		For V4L2, this is defined by &enum v4l2_buf_type type.
+ *
+ * Videobuf2 core helper to implement VIDIOC_STREAMON() operation. It is called
+ * internally by VB2 by an API-specific handler, like ``videobuf2-v4l2.h``.
+ *
+ * Return: returns zero on success; an error code otherwise.
+ */
 int vb2_core_streamon(struct vb2_queue *q, unsigned int type);
+
+/**
+ * vb2_core_streamoff() - Implements VB2 stream OFF logic
+ *
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue
+ * @type:	type of the queue to be started.
+ *		For V4L2, this is defined by &enum v4l2_buf_type type.
+ *
+ * Videobuf2 core helper to implement VIDIOC_STREAMOFF() operation. It is
+ * called internally by VB2 by an API-specific handler, like
+ * ``videobuf2-v4l2.h``.
+ *
+ * Return: returns zero on success; an error code otherwise.
+ */
 int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
 
 /**
- * vb2_core_expbuf() - Export a buffer as a file descriptor
- * @q:		videobuf2 queue
- * @fd:		file descriptor associated with DMABUF (set by driver) *
- * @type:	buffer type
- * @index:	id number of the buffer
+ * vb2_core_expbuf() - Export a buffer as a file descriptor.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @fd:		pointer to the file descriptor associated with DMABUF
+ *		(set by driver).
+ * @type:	buffer type.
+ * @index:	id number of the buffer.
  * @plane:	index of the plane to be exported, 0 for single plane queues
- * @flags:	flags for newly created file, currently only O_CLOEXEC is
- *		supported, refer to manual of open syscall for more details
+ * @flags:	file flags for newly created file, as defined at
+ *		include/uapi/asm-generic/fcntl.h.
+ *		Currently, the only used flag is %O_CLOEXEC.
+ *		is supported, refer to manual of open syscall for more details.
  *
- * The return values from this function are intended to be directly returned
- * from vidioc_expbuf handler in driver.
+ *
+ * Videobuf2 core helper to implement VIDIOC_EXPBUF() operation. It is called
+ * internally by VB2 by an API-specific handler, like ``videobuf2-v4l2.h``.
+ *
+ * Return: returns zero on success; an error code otherwise.
  */
 int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
 		unsigned int index, unsigned int plane, unsigned int flags);
 
 /**
  * vb2_core_queue_init() - initialize a videobuf2 queue
- * @q:		videobuf2 queue; this structure should be allocated in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ *		This structure should be allocated in driver
  *
- * The vb2_queue structure should be allocated by the driver. The driver is
+ * The &vb2_queue structure should be allocated by the driver. The driver is
  * responsible of clearing it's content and setting initial values for some
  * required entries before calling this function.
- * q->ops, q->mem_ops, q->type and q->io_modes are mandatory. Please refer
- * to the struct vb2_queue description in include/media/videobuf2-core.h
- * for more information.
+ *
+ * .. note::
+ *
+ *    The following fields at @q should be set before calling this function:
+ *    &vb2_queue->ops, &vb2_queue->mem_ops, &vb2_queue->type.
  */
 int vb2_core_queue_init(struct vb2_queue *q);
 
 /**
  * vb2_core_queue_release() - stop streaming, release the queue and free memory
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * This function stops streaming and performs necessary clean ups, including
  * freeing video buffer memory. The driver is responsible for freeing
- * the vb2_queue structure itself.
+ * the &struct vb2_queue itself.
  */
 void vb2_core_queue_release(struct vb2_queue *q);
 
 /**
  * vb2_queue_error() - signal a fatal error on the queue
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * Flag that a fatal unrecoverable error has occurred and wake up all processes
- * waiting on the queue. Polling will now set POLLERR and queuing and dequeuing
- * buffers will return -EIO.
+ * waiting on the queue. Polling will now set %POLLERR and queuing and dequeuing
+ * buffers will return %-EIO.
  *
- * The error flag will be cleared when cancelling the queue, either from
- * vb2_streamoff or vb2_queue_release. Drivers should thus not call this
+ * The error flag will be cleared when canceling the queue, either from
+ * vb2_streamoff() or vb2_queue_release(). Drivers should thus not call this
  * function before starting the stream, otherwise the error flag will remain set
  * until the queue is released when closing the device node.
  */
 void vb2_queue_error(struct vb2_queue *q);
 
 /**
- * vb2_mmap() - map video buffers into application address space
- * @q:		videobuf2 queue
- * @vma:	vma passed to the mmap file operation handler in the driver
+ * vb2_mmap() - map video buffers into application address space.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @vma:	pointer to &struct vm_area_struct with the vma passed
+ *		to the mmap file operation handler in the driver.
  *
  * Should be called from mmap file operation handler of a driver.
  * This function maps one plane of one of the available video buffers to
@@ -837,8 +891,10 @@ void vb2_queue_error(struct vb2_queue *q);
  * has to be called once per each plane per each buffer previously allocated.
  *
  * When the userspace application calls mmap, it passes to it an offset returned
- * to it earlier by the means of vidioc_querybuf handler. That offset acts as
- * a "cookie", which is then used to identify the plane to be mapped.
+ * to it earlier by the means of &v4l2_ioctl_ops->vidioc_querybuf handler.
+ * That offset acts as a "cookie", which is then used to identify the plane
+ * to be mapped.
+ *
  * This function finds a plane with a matching offset and a mapping is performed
  * by the means of a provided memory operation.
  *
@@ -848,6 +904,21 @@ void vb2_queue_error(struct vb2_queue *q);
 int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma);
 
 #ifndef CONFIG_MMU
+/**
+ * vb2_get_unmapped_area - map video buffers into application address space.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @addr:	memory address.
+ * @len:	buffer size.
+ * @pgoff:	page offset.
+ * @flags:	memory flags.
+ *
+ * This function is used in noMMU platforms to propose address mapping
+ * for a given buffer. It's intended to be used as a handler for the
+ * &file_operations->get_unmapped_area operation.
+ *
+ * This is called by the mmap() syscall routines will call this
+ * to get a proposed address for the mapping, when ``!CONFIG_MMU``.
+ */
 unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
 				    unsigned long addr,
 				    unsigned long len,
@@ -856,10 +927,12 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
 #endif
 
 /**
- * vb2_core_poll() - implements poll userspace operation
- * @q:		videobuf2 queue
- * @file:	file argument passed to the poll file operation handler
- * @wait:	wait argument passed to the poll file operation handler
+ * vb2_core_poll() - implements poll syscall() logic.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @file:	&struct file argument passed to the poll
+ *		file operation handler.
+ * @wait:	&poll_table wait argument passed to the poll
+ *		file operation handler.
  *
  * This function implements poll file operation handler for a driver.
  * For CAPTURE queues, if a buffer is ready to be dequeued, the userspace will
@@ -874,16 +947,32 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
 __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
 			   poll_table *wait);
 
+/**
+ * vb2_read() - implements read() syscall logic.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @data:	pointed to target userspace buffer
+ * @count:	number of bytes to read
+ * @ppos:	file handle position tracking pointer
+ * @nonblock:	mode selector (1 means blocking calls, 0 means nonblocking)
+ */
 size_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
 		loff_t *ppos, int nonblock);
+/**
+ * vb2_read() - implements write() syscall logic.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @data:	pointed to target userspace buffer
+ * @count:	number of bytes to write
+ * @ppos:	file handle position tracking pointer
+ * @nonblock:	mode selector (1 means blocking calls, 0 means nonblocking)
+ */
 size_t vb2_write(struct vb2_queue *q, const char __user *data, size_t count,
 		loff_t *ppos, int nonblock);
 
 /**
- * typedef vb2_thread_fnc - callback function for use with vb2_thread
+ * typedef vb2_thread_fnc - callback function for use with vb2_thread.
  *
- * @vb: pointer to struct &vb2_buffer
- * @priv: pointer to a private pointer
+ * @vb: pointer to struct &vb2_buffer.
+ * @priv: pointer to a private data.
  *
  * This is called whenever a buffer is dequeued in the thread.
  */
@@ -891,13 +980,13 @@ typedef int (*vb2_thread_fnc)(struct vb2_buffer *vb, void *priv);
 
 /**
  * vb2_thread_start() - start a thread for the given queue.
- * @q:		videobuf queue
- * @fnc:	callback function
- * @priv:	priv pointer passed to the callback function
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @fnc:	&vb2_thread_fnc callback function.
+ * @priv:	priv pointer passed to the callback function.
  * @thread_name:the name of the thread. This will be prefixed with "vb2-".
  *
  * This starts a thread that will queue and dequeue until an error occurs
- * or @vb2_thread_stop is called.
+ * or vb2_thread_stop() is called.
  *
  * .. attention::
  *
@@ -910,13 +999,13 @@ int vb2_thread_start(struct vb2_queue *q, vb2_thread_fnc fnc, void *priv,
 
 /**
  * vb2_thread_stop() - stop the thread for the given queue.
- * @q:		videobuf queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  */
 int vb2_thread_stop(struct vb2_queue *q);
 
 /**
- * vb2_is_streaming() - return streaming status of the queue
- * @q:		videobuf queue
+ * vb2_is_streaming() - return streaming status of the queue.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  */
 static inline bool vb2_is_streaming(struct vb2_queue *q)
 {
@@ -925,15 +1014,16 @@ static inline bool vb2_is_streaming(struct vb2_queue *q)
 
 /**
  * vb2_fileio_is_active() - return true if fileio is active.
- * @q:		videobuf queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * This returns true if read() or write() is used to stream the data
  * as opposed to stream I/O. This is almost never an important distinction,
  * except in rare cases. One such case is that using read() or write() to
- * stream a format using V4L2_FIELD_ALTERNATE is not allowed since there
+ * stream a format using %V4L2_FIELD_ALTERNATE is not allowed since there
  * is no way you can pass the field information of each buffer to/from
  * userspace. A driver that supports this field format should check for
- * this in the queue_setup op and reject it if this function returns true.
+ * this in the &vb2_ops->queue_setup op and reject it if this function returns
+ * true.
  */
 static inline bool vb2_fileio_is_active(struct vb2_queue *q)
 {
@@ -941,8 +1031,8 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
 }
 
 /**
- * vb2_is_busy() - return busy status of the queue
- * @q:		videobuf queue
+ * vb2_is_busy() - return busy status of the queue.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * This function checks if queue has any buffers allocated.
  */
@@ -952,8 +1042,8 @@ static inline bool vb2_is_busy(struct vb2_queue *q)
 }
 
 /**
- * vb2_get_drv_priv() - return driver private data associated with the queue
- * @q:		videobuf queue
+ * vb2_get_drv_priv() - return driver private data associated with the queue.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  */
 static inline void *vb2_get_drv_priv(struct vb2_queue *q)
 {
@@ -961,10 +1051,11 @@ static inline void *vb2_get_drv_priv(struct vb2_queue *q)
 }
 
 /**
- * vb2_set_plane_payload() - set bytesused for the plane plane_no
- * @vb:		buffer for which plane payload should be set
- * @plane_no:	plane number for which payload should be set
- * @size:	payload in bytes
+ * vb2_set_plane_payload() - set bytesused for the plane @plane_no.
+ * @vb:		pointer to &struct vb2_buffer to which the plane in
+ *		question belongs to.
+ * @plane_no:	plane number for which payload should be set.
+ * @size:	payload in bytes.
  */
 static inline void vb2_set_plane_payload(struct vb2_buffer *vb,
 				 unsigned int plane_no, unsigned long size)
@@ -975,8 +1066,9 @@ static inline void vb2_set_plane_payload(struct vb2_buffer *vb,
 
 /**
  * vb2_get_plane_payload() - get bytesused for the plane plane_no
- * @vb:		buffer for which plane payload should be set
- * @plane_no:	plane number for which payload should be set
+ * @vb:		pointer to &struct vb2_buffer to which the plane in
+ *		question belongs to.
+ * @plane_no:	plane number for which payload should be set.
  */
 static inline unsigned long vb2_get_plane_payload(struct vb2_buffer *vb,
 				 unsigned int plane_no)
@@ -987,9 +1079,10 @@ static inline unsigned long vb2_get_plane_payload(struct vb2_buffer *vb,
 }
 
 /**
- * vb2_plane_size() - return plane size in bytes
- * @vb:		buffer for which plane size should be returned
- * @plane_no:	plane number for which size should be returned
+ * vb2_plane_size() - return plane size in bytes.
+ * @vb:		pointer to &struct vb2_buffer to which the plane in
+ *		question belongs to.
+ * @plane_no:	plane number for which size should be returned.
  */
 static inline unsigned long
 vb2_plane_size(struct vb2_buffer *vb, unsigned int plane_no)
@@ -1000,8 +1093,8 @@ vb2_plane_size(struct vb2_buffer *vb, unsigned int plane_no)
 }
 
 /**
- * vb2_start_streaming_called() - return streaming status of driver
- * @q:		videobuf queue
+ * vb2_start_streaming_called() - return streaming status of driver.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  */
 static inline bool vb2_start_streaming_called(struct vb2_queue *q)
 {
@@ -1009,8 +1102,8 @@ static inline bool vb2_start_streaming_called(struct vb2_queue *q)
 }
 
 /**
- * vb2_clear_last_buffer_dequeued() - clear last buffer dequeued flag of queue
- * @q:		videobuf queue
+ * vb2_clear_last_buffer_dequeued() - clear last buffer dequeued flag of queue.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  */
 static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
 {
@@ -1024,10 +1117,10 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
 
 /**
  * vb2_buffer_in_use() - return true if the buffer is in use and
- * the queue cannot be freed (by the means of REQBUFS(0)) call
+ * the queue cannot be freed (by the means of VIDIOC_REQBUFS(0)) call.
  *
- * @vb:		buffer for which plane size should be returned
- * @q:		videobuf queue
+ * @vb:		buffer for which plane size should be returned.
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  */
 bool vb2_buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb);
 
@@ -1035,11 +1128,11 @@ bool vb2_buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb);
  * vb2_verify_memory_type() - Check whether the memory type and buffer type
  * passed to a buffer operation are compatible with the queue.
  *
- * @q:		videobuf queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  * @memory:	memory model, as defined by enum &vb2_memory.
  * @type:	private buffer type whose content is defined by the vb2-core
  *		caller. For example, for V4L2, it should match
- *		the types defined on enum &v4l2_buf_type
+ *		the types defined on enum &v4l2_buf_type.
  */
 int vb2_verify_memory_type(struct vb2_queue *q,
 		enum vb2_memory memory, unsigned int type);
diff --git a/include/media/videobuf2-dvb.h b/include/media/videobuf2-dvb.h
index 5a31faa24f1a..8605366ec87c 100644
--- a/include/media/videobuf2-dvb.h
+++ b/include/media/videobuf2-dvb.h
@@ -2,12 +2,11 @@
 #ifndef _VIDEOBUF2_DVB_H_
 #define	_VIDEOBUF2_DVB_H_
 
-#include <dvbdev.h>
-#include <dmxdev.h>
-#include <dvb_demux.h>
-#include <dvb_net.h>
-#include <dvb_frontend.h>
-
+#include <media/dvbdev.h>
+#include <media/dmxdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_net.h>
+#include <media/dvb_frontend.h>
 #include <media/videobuf2-v4l2.h>
 
 /* We don't actually need to include media-device.h here */
diff --git a/include/media/videobuf2-memops.h b/include/media/videobuf2-memops.h
index a6ed091b79ce..4b5b84f93538 100644
--- a/include/media/videobuf2-memops.h
+++ b/include/media/videobuf2-memops.h
@@ -19,11 +19,11 @@
 #include <linux/refcount.h>
 
 /**
- * struct vb2_vmarea_handler - common vma refcount tracking handler
+ * struct vb2_vmarea_handler - common vma refcount tracking handler.
  *
- * @refcount:	pointer to refcount entry in the buffer
- * @put:	callback to function that decreases buffer refcount
- * @arg:	argument for @put callback
+ * @refcount:	pointer to &refcount_t entry in the buffer.
+ * @put:	callback to function that decreases buffer refcount.
+ * @arg:	argument for @put callback.
  */
 struct vb2_vmarea_handler {
 	refcount_t		*refcount;
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index c2fa55657440..3d5e2d739f05 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -24,16 +24,17 @@
 #endif
 
 /**
- * struct vb2_v4l2_buffer - video buffer information for v4l2
+ * struct vb2_v4l2_buffer - video buffer information for v4l2.
  *
- * @vb2_buf:	video buffer 2
- * @flags:	buffer informational flags
- * @field:	enum v4l2_field; field order of the image in the buffer
- * @timecode:	frame timecode
- * @sequence:	sequence count of this frame
+ * @vb2_buf:	embedded struct &vb2_buffer.
+ * @flags:	buffer informational flags.
+ * @field:	field order of the image in the buffer, as defined by
+ *		&enum v4l2_field.
+ * @timecode:	frame timecode.
+ * @sequence:	sequence count of this frame.
  *
  * Should contain enough information to be able to cover all the fields
- * of struct v4l2_buffer at videodev2.h
+ * of &struct v4l2_buffer at ``videodev2.h``.
  */
 struct vb2_v4l2_buffer {
 	struct vb2_buffer	vb2_buf;
@@ -56,9 +57,9 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b);
  * vb2_reqbufs() - Wrapper for vb2_core_reqbufs() that also verifies
  * the memory and type values.
  *
- * @q:		videobuf2 queue
- * @req:	struct passed from userspace to vidioc_reqbufs handler
- *		in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @req:	&struct v4l2_requestbuffers passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_reqbufs handler in driver.
  */
 int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req);
 
@@ -66,94 +67,99 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req);
  * vb2_create_bufs() - Wrapper for vb2_core_create_bufs() that also verifies
  * the memory and type values.
  *
- * @q:		videobuf2 queue
- * @create:	creation parameters, passed from userspace to vidioc_create_bufs
- *		handler in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @create:	creation parameters, passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_create_bufs handler in driver
  */
 int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
 
 /**
  * vb2_prepare_buf() - Pass ownership of a buffer from userspace to the kernel
  *
- * @q:		videobuf2 queue
- * @b:		buffer structure passed from userspace to vidioc_prepare_buf
- *		handler in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @b:		buffer structure passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_prepare_buf handler in driver
+ *
+ * Should be called from &v4l2_ioctl_ops->vidioc_prepare_buf ioctl handler
+ * of a driver.
  *
- * Should be called from vidioc_prepare_buf ioctl handler of a driver.
  * This function:
  *
  * #) verifies the passed buffer,
- * #) calls buf_prepare callback in the driver (if provided), in which
- *    driver-specific buffer initialization can be performed.
+ * #) calls &vb2_ops->buf_prepare callback in the driver (if provided),
+ *    in which driver-specific buffer initialization can be performed.
  *
  * The return values from this function are intended to be directly returned
- * from vidioc_prepare_buf handler in driver.
+ * from &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
  */
 int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b);
 
 /**
  * vb2_qbuf() - Queue a buffer from userspace
- * @q:		videobuf2 queue
- * @b:		buffer structure passed from userspace to VIDIOC_QBUF() handler
- *		in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @b:		buffer structure passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_qbuf handler in driver
  *
- * Should be called from VIDIOC_QBUF() ioctl handler of a driver.
+ * Should be called from &v4l2_ioctl_ops->vidioc_qbuf handler of a driver.
  *
  * This function:
  *
- * #) verifies the passed buffer,
- * #) if necessary, calls buf_prepare callback in the driver (if provided), in
- *    which driver-specific buffer initialization can be performed,
- * #) if streaming is on, queues the buffer in driver by the means of buf_queue
- *    callback for processing.
+ * #) verifies the passed buffer;
+ * #) if necessary, calls &vb2_ops->buf_prepare callback in the driver
+ *    (if provided), in which driver-specific buffer initialization can
+ *    be performed;
+ * #) if streaming is on, queues the buffer in driver by the means of
+ *    &vb2_ops->buf_queue callback for processing.
  *
  * The return values from this function are intended to be directly returned
- * from VIDIOC_QBUF() handler in driver.
+ * from &v4l2_ioctl_ops->vidioc_qbuf handler in driver.
  */
 int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b);
 
 /**
  * vb2_expbuf() - Export a buffer as a file descriptor
- * @q:		videobuf2 queue
- * @eb:		export buffer structure passed from userspace to VIDIOC_EXPBUF()
- *		handler in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @eb:		export buffer structure passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_expbuf handler in driver
  *
  * The return values from this function are intended to be directly returned
- * from VIDIOC_EXPBUF() handler in driver.
+ * from &v4l2_ioctl_ops->vidioc_expbuf handler in driver.
  */
 int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb);
 
 /**
  * vb2_dqbuf() - Dequeue a buffer to the userspace
- * @q:		videobuf2 queue
- * @b:		buffer structure passed from userspace to VIDIOC_DQBUF() handler
- *		in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @b:		buffer structure passed from userspace to
+ *		&v4l2_ioctl_ops->vidioc_dqbuf handler in driver
  * @nonblocking: if true, this call will not sleep waiting for a buffer if no
  *		 buffers ready for dequeuing are present. Normally the driver
- *		 would be passing (file->f_flags & O_NONBLOCK) here
+ *		 would be passing (&file->f_flags & %O_NONBLOCK) here
  *
- * Should be called from VIDIOC_DQBUF() ioctl handler of a driver.
+ * Should be called from &v4l2_ioctl_ops->vidioc_dqbuf ioctl handler
+ * of a driver.
  *
  * This function:
  *
- * #) verifies the passed buffer,
- * #) calls buf_finish callback in the driver (if provided), in which
+ * #) verifies the passed buffer;
+ * #) calls &vb2_ops->buf_finish callback in the driver (if provided), in which
  *    driver can perform any additional operations that may be required before
- *    returning the buffer to userspace, such as cache sync,
+ *    returning the buffer to userspace, such as cache sync;
  * #) the buffer struct members are filled with relevant information for
  *    the userspace.
  *
  * The return values from this function are intended to be directly returned
- * from VIDIOC_DQBUF() handler in driver.
+ * from &v4l2_ioctl_ops->vidioc_dqbuf handler in driver.
  */
 int vb2_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool nonblocking);
 
 /**
  * vb2_streamon - start streaming
- * @q:		videobuf2 queue
- * @type:	type argument passed from userspace to vidioc_streamon handler
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+ * @type:	type argument passed from userspace to vidioc_streamon handler,
+ *		as defined by &enum v4l2_buf_type.
  *
- * Should be called from vidioc_streamon handler of a driver.
+ * Should be called from &v4l2_ioctl_ops->vidioc_streamon handler of a driver.
  *
  * This function:
  *
@@ -161,13 +167,13 @@ int vb2_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool nonblocking);
  * 2) passes any previously queued buffers to the driver and starts streaming
  *
  * The return values from this function are intended to be directly returned
- * from vidioc_streamon handler in the driver.
+ * from &v4l2_ioctl_ops->vidioc_streamon handler in the driver.
  */
 int vb2_streamon(struct vb2_queue *q, enum v4l2_buf_type type);
 
 /**
  * vb2_streamoff - stop streaming
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  * @type:	type argument passed from userspace to vidioc_streamoff handler
  *
  * Should be called from vidioc_streamoff handler of a driver.
@@ -186,7 +192,7 @@ int vb2_streamoff(struct vb2_queue *q, enum v4l2_buf_type type);
 
 /**
  * vb2_queue_init() - initialize a videobuf2 queue
- * @q:		videobuf2 queue; this structure should be allocated in driver
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * The vb2_queue structure should be allocated by the driver. The driver is
  * responsible of clearing it's content and setting initial values for some
@@ -199,7 +205,7 @@ int __must_check vb2_queue_init(struct vb2_queue *q);
 
 /**
  * vb2_queue_release() - stop streaming, release the queue and free memory
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  *
  * This function stops streaming and performs necessary clean ups, including
  * freeing video buffer memory. The driver is responsible for freeing
@@ -209,7 +215,7 @@ void vb2_queue_release(struct vb2_queue *q);
 
 /**
  * vb2_poll() - implements poll userspace operation
- * @q:		videobuf2 queue
+ * @q:		pointer to &struct vb2_queue with videobuf2 queue.
  * @file:	file argument passed to the poll file operation handler
  * @wait:	wait argument passed to the poll file operation handler
  *
@@ -270,7 +276,7 @@ unsigned long vb2_fop_get_unmapped_area(struct file *file, unsigned long addr,
 /**
  * vb2_ops_wait_prepare - helper function to lock a struct &vb2_queue
  *
- * @vq: pointer to struct vb2_queue
+ * @vq: pointer to &struct vb2_queue
  *
  * ..note:: only use if vq->lock is non-NULL.
  */
@@ -279,7 +285,7 @@ void vb2_ops_wait_prepare(struct vb2_queue *vq);
 /**
  * vb2_ops_wait_finish - helper function to unlock a struct &vb2_queue
  *
- * @vq: pointer to struct vb2_queue
+ * @vq: pointer to &struct vb2_queue
  *
  * ..note:: only use if vq->lock is non-NULL.
  */