staging/atomisp: Add support for the Intel IPU v2

This patch adds support for the Intel IPU v2 as found on Android and IoT
Baytrail-T and Baytrail-CR platforms (those with the IPU PCI mapped). You
will also need the firmware files from your device (Android usually puts
them into /etc) - or you can find them in the downloadable restore/upgrade
kits if you blew them away for some reason.

It may be possible to extend the driver to handle the BYT/T windows
platforms such as the ASUS T100TA. These platforms don't expose the IPU via
the PCI interface but via ACPI buried in the GPU description and with the
camera information somewhere unknown so would need a platform driver
interface adding to the codebase *IFF* the firmware works on such devices.

To get good results you also need a suitable support library such as
libxcam. The camera is intended to be driven from Android so it has a lot of
features that many desktop apps don't fully spport.

In theory all the pieces are there to build it with -DISP2401 and some
differing files to get CherryTrail/T support, but unifying the drivers
properlly is a work in progress.

The IPU driver represents the work of a lot of people within Intel over many
years. It's historical goal was portability rather than Linux upstream. Any
queries about the upstream aimed driver should be sent to me not to the
original authors.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 582 insertions, 0 deletions

diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_stream_public.h b/drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_stream_public.h
new file mode 100644
index 0000000..2c8d9de
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_stream_public.h
@@ -0,0 +1,582 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 __IA_CSS_STREAM_PUBLIC_H
+#define __IA_CSS_STREAM_PUBLIC_H
+
+/** @file
+ * This file contains support for configuring and controlling streams
+ */
+
+#include <type_support.h>
+#include "ia_css_types.h"
+#include "ia_css_pipe_public.h"
+#include "ia_css_metadata.h"
+#include "ia_css_tpg.h"
+#include "ia_css_prbs.h"
+#include "ia_css_input_port.h"
+
+/** Input modes, these enumerate all supported input modes.
+ *  Note that not all ISP modes support all input modes.
+ */
+enum ia_css_input_mode {
+	IA_CSS_INPUT_MODE_SENSOR, /**< data from sensor */
+	IA_CSS_INPUT_MODE_FIFO,   /**< data from input-fifo */
+	IA_CSS_INPUT_MODE_TPG,    /**< data from test-pattern generator */
+	IA_CSS_INPUT_MODE_PRBS,   /**< data from pseudo-random bit stream */
+	IA_CSS_INPUT_MODE_MEMORY, /**< data from a frame in memory */
+	IA_CSS_INPUT_MODE_BUFFERED_SENSOR /**< data is sent through mipi buffer */
+};
+
+/** Structure of the MIPI buffer configuration
+ */
+struct ia_css_mipi_buffer_config {
+	unsigned int size_mem_words; /**< The frame size in the system memory
+					  words (32B) */
+	bool contiguous;	     /**< Allocated memory physically
+					  contiguously or not. \deprecated{Will be false always.}*/
+	unsigned int nof_mipi_buffers; /**< The number of MIPI buffers required for this
+					stream */
+};
+
+enum {
+	IA_CSS_STREAM_ISYS_STREAM_0 = 0,
+	IA_CSS_STREAM_DEFAULT_ISYS_STREAM_IDX = IA_CSS_STREAM_ISYS_STREAM_0,
+	IA_CSS_STREAM_ISYS_STREAM_1,
+	IA_CSS_STREAM_MAX_ISYS_STREAM_PER_CH
+};
+
+/** This is input data configuration for one MIPI data type. We can have
+ *  multiple of this in one virtual channel.
+ */
+struct ia_css_stream_isys_stream_config {
+	struct ia_css_resolution  input_res; /**< Resolution of input data */
+	enum ia_css_stream_format format; /**< Format of input stream. This data
+					       format will be mapped to MIPI data
+					       type internally. */
+	int linked_isys_stream_id; /**< default value is -1, other value means
+							current isys_stream shares the same buffer with
+							indicated isys_stream*/
+	bool valid; /**< indicate whether other fields have valid value */
+};
+
+struct ia_css_stream_input_config {
+	struct ia_css_resolution  input_res; /**< Resolution of input data */
+	struct ia_css_resolution  effective_res; /**< Resolution of input data.
+							Used for CSS 2400/1 System and deprecated for other
+							systems (replaced by input_effective_res in
+							ia_css_pipe_config) */
+	enum ia_css_stream_format format; /**< Format of input stream. This data
+					       format will be mapped to MIPI data
+					       type internally. */
+	enum ia_css_bayer_order bayer_order; /**< Bayer order for RAW streams */
+};
+
+
+/** Input stream description. This describes how input will flow into the
+ *  CSS. This is used to program the CSS hardware.
+ */
+struct ia_css_stream_config {
+	enum ia_css_input_mode    mode; /**< Input mode */
+	union {
+		struct ia_css_input_port  port; /**< Port, for sensor only. */
+		struct ia_css_tpg_config  tpg;  /**< TPG configuration */
+		struct ia_css_prbs_config prbs; /**< PRBS configuration */
+	} source; /**< Source of input data */
+	unsigned int	      channel_id; /**< Channel on which input data
+						   will arrive. Use this field
+						   to specify virtual channel id.
+						   Valid values are: 0, 1, 2, 3 */
+	struct ia_css_stream_isys_stream_config isys_config[IA_CSS_STREAM_MAX_ISYS_STREAM_PER_CH];
+	struct ia_css_stream_input_config input_config;
+
+#ifdef ISP2401
+	/* Currently, Android and Windows platforms interpret the binning_factor parameter
+	 * differently. In Android, the binning factor is expressed in the form
+	 * 2^N * 2^N, whereas in Windows platform, the binning factor is N*N
+	 * To use the Windows method of specification, the caller has to define
+	 * macro USE_WINDOWS_BINNING_FACTOR. This is for backward compatibility only
+	 * and will be deprecated. In the future,all platforms will use the N*N method
+	 */
+#endif
+	unsigned int sensor_binning_factor; /**< Binning factor used by sensor
+						 to produce image data. This is
+						 used for shading correction. */
+	unsigned int pixels_per_clock; /**< Number of pixels per clock, which can be
+					    1, 2 or 4. */
+	bool online; /**< offline will activate RAW copy on SP, use this for
+			  continuous capture. */
+		/* ISYS2401 usage: ISP receives data directly from sensor, no copy. */
+	unsigned init_num_cont_raw_buf; /**< initial number of raw buffers to
+					     allocate */
+	unsigned target_num_cont_raw_buf; /**< total number of raw buffers to
+					     allocate */
+	bool pack_raw_pixels; /**< Pack pixels in the raw buffers */
+	bool continuous; /**< Use SP copy feature to continuously capture frames
+			      to system memory and run pipes in offline mode */
+	bool disable_cont_viewfinder; /**< disable continous viewfinder for ZSL use case */
+	int32_t flash_gpio_pin; /**< pin on which the flash is connected, -1 for no flash */
+	int left_padding; /**< The number of input-formatter left-paddings, -1 for default from binary.*/
+	struct ia_css_mipi_buffer_config mipi_buffer_config; /**< mipi buffer configuration */
+	struct ia_css_metadata_config	metadata_config;     /**< Metadata configuration. */
+	bool ia_css_enable_raw_buffer_locking; /**< Enable Raw Buffer Locking for HALv3 Support */
+	bool lock_all;
+	/**< Lock all RAW buffers (true) or lock only buffers processed by
+	     video or preview pipe (false).
+	     This setting needs to be enabled to allow raw buffer locking
+	     without continuous viewfinder. */
+};
+
+struct ia_css_stream;
+
+/** Stream info, this struct describes properties of a stream after it has been
+ *  created.
+ */
+struct ia_css_stream_info {
+	struct ia_css_metadata_info metadata_info;
+	/**< Info about the metadata layout, this contains the stride. */
+};
+
+/** @brief Load default stream configuration
+ * @param[in,out]	stream_config The stream configuration.
+ * @return	None
+ *
+ * This function will reset the stream configuration to the default state:
+@code
+	memset(stream_config, 0, sizeof(*stream_config));
+	stream_config->online = true;
+	stream_config->left_padding = -1;
+@endcode
+ */
+void ia_css_stream_config_defaults(struct ia_css_stream_config *stream_config);
+
+/*
+ * create the internal structures and fill in the configuration data and pipes
+ */
+
+ /** @brief Creates a stream
+ * @param[in]	stream_config The stream configuration.
+ * @param[in]	num_pipes The number of pipes to incorporate in the stream.
+ * @param[in]	pipes The pipes.
+ * @param[out]	stream The stream.
+ * @return	IA_CSS_SUCCESS or the error code.
+ *
+ * This function will create a stream with a given configuration and given pipes.
+ */
+enum ia_css_err
+ia_css_stream_create(const struct ia_css_stream_config *stream_config,
+					 int num_pipes,
+					 struct ia_css_pipe *pipes[],
+					 struct ia_css_stream **stream);
+
+/** @brief Destroys a stream
+ * @param[in]	stream The stream.
+ * @return	IA_CSS_SUCCESS or the error code.
+ *
+ * This function will destroy a given stream.
+ */
+enum ia_css_err
+ia_css_stream_destroy(struct ia_css_stream *stream);
+
+/** @brief Provides information about a stream
+ * @param[in]	stream The stream.
+ * @param[out]	stream_info The information about the stream.
+ * @return	IA_CSS_SUCCESS or the error code.
+ *
+ * This function will destroy a given stream.
+ */
+enum ia_css_err
+ia_css_stream_get_info(const struct ia_css_stream *stream,
+		       struct ia_css_stream_info *stream_info);
+
+/** @brief load (rebuild) a stream that was unloaded.
+ * @param[in]	stream The stream
+ * @return		IA_CSS_SUCCESS or the error code
+ *
+ * Rebuild a stream, including allocating structs, setting configuration and
+ * building the required pipes.
+ */
+enum ia_css_err
+ia_css_stream_load(struct ia_css_stream *stream);
+
+/** @brief Starts the stream.
+ * @param[in]	stream The stream.
+ * @return IA_CSS_SUCCESS or the error code.
+ *
+ * The dynamic data in
+ * the buffers are not used and need to be queued with a separate call
+ * to ia_css_pipe_enqueue_buffer.
+ * NOTE: this function will only send start event to corresponding
+ * thread and will not start SP any more.
+ */
+enum ia_css_err
+ia_css_stream_start(struct ia_css_stream *stream);
+
+/** @brief Stop the stream.
+ * @param[in]	stream The stream.
+ * @return	IA_CSS_SUCCESS or the error code.
+ *
+ * NOTE: this function will send stop event to pipes belong to this
+ * stream but will not terminate threads.
+ */
+enum ia_css_err
+ia_css_stream_stop(struct ia_css_stream *stream);
+
+/** @brief Check if a stream has stopped
+ * @param[in]	stream The stream.
+ * @return	boolean flag
+ *
+ * This function will check if the stream has stopped and return the correspondent boolean flag.
+ */
+bool
+ia_css_stream_has_stopped(struct ia_css_stream *stream);
+
+/** @brief	destroy a stream according to the stream seed previosly saved in the seed array.
+ * @param[in]	stream The stream.
+ * @return	IA_CSS_SUCCESS (no other errors are generated now)
+ *
+ * Destroy the stream and all the pipes related to it.
+ */
+enum ia_css_err
+ia_css_stream_unload(struct ia_css_stream *stream);
+
+/** @brief Returns stream format
+ * @param[in]	stream The stream.
+ * @return	format of the string
+ *
+ * This function will return the stream format.
+ */
+enum ia_css_stream_format
+ia_css_stream_get_format(const struct ia_css_stream *stream);
+
+/** @brief Check if the stream is configured for 2 pixels per clock
+ * @param[in]	stream The stream.
+ * @return	boolean flag
+ *
+ * This function will check if the stream is configured for 2 pixels per clock and
+ * return the correspondent boolean flag.
+ */
+bool
+ia_css_stream_get_two_pixels_per_clock(const struct ia_css_stream *stream);
+
+/** @brief Sets the output frame stride (at the last pipe)
+ * @param[in]	stream The stream
+ * @param[in]	output_padded_width - the output buffer stride.
+ * @return	ia_css_err
+ *
+ * This function will Set the output frame stride (at the last pipe)
+ */
+enum ia_css_err
+ia_css_stream_set_output_padded_width(struct ia_css_stream *stream, unsigned int output_padded_width);
+
+/** @brief Return max number of continuous RAW frames.
+ * @param[in]	stream The stream.
+ * @param[out]	buffer_depth The maximum number of continuous RAW frames.
+ * @return	IA_CSS_SUCCESS or IA_CSS_ERR_INVALID_ARGUMENTS
+ *
+ * This function will return the maximum number of continuous RAW frames
+ * the system can support.
+ */
+enum ia_css_err
+ia_css_stream_get_max_buffer_depth(struct ia_css_stream *stream, int *buffer_depth);
+
+/** @brief Set nr of continuous RAW frames to use.
+ *
+ * @param[in]	stream The stream.
+ * @param[in]	buffer_depth	Number of frames to set.
+ * @return	IA_CSS_SUCCESS or error code upon error.
+ *
+ * Set the number of continuous frames to use during continuous modes.
+ */
+enum ia_css_err
+ia_css_stream_set_buffer_depth(struct ia_css_stream *stream, int buffer_depth);
+
+/** @brief Get number of continuous RAW frames to use.
+ * @param[in]	stream The stream.
+ * @param[out]	buffer_depth The number of frames to use
+ * @return	IA_CSS_SUCCESS or IA_CSS_ERR_INVALID_ARGUMENTS
+ *
+ * Get the currently set number of continuous frames
+ * to use during continuous modes.
+ */
+enum ia_css_err
+ia_css_stream_get_buffer_depth(struct ia_css_stream *stream, int *buffer_depth);
+
+/* ===== CAPTURE ===== */
+
+/** @brief Configure the continuous capture
+ *
+ * @param[in]	stream		The stream.
+ * @param[in]	num_captures	The number of RAW frames to be processed to
+ *				YUV. Setting this to -1 will make continuous
+ *				capture run until it is stopped.
+ *				This number will also be used to allocate RAW
+ *				buffers. To allow the viewfinder to also
+ *				keep operating, 2 extra buffers will always be
+ *				allocated.
+ *				If the offset is negative and the skip setting
+ *				is greater than 0, additional buffers may be
+ *				needed.
+ * @param[in]	skip		Skip N frames in between captures. This can be
+ *				used to select a slower capture frame rate than
+ *				the sensor output frame rate.
+ * @param[in]	offset		Start the RAW-to-YUV processing at RAW buffer
+ *				with this offset. This allows the user to
+ *				process RAW frames that were captured in the
+ *				past or future.
+ * @return			IA_CSS_SUCCESS or error code upon error.
+ *
+ *  For example, to capture the current frame plus the 2 previous
+ *  frames and 2 subsequent frames, you would call
+ *  ia_css_stream_capture(5, 0, -2).
+ */
+enum ia_css_err
+ia_css_stream_capture(struct ia_css_stream *stream,
+			int num_captures,
+			unsigned int skip,
+			int offset);
+
+/** @brief Specify which raw frame to tag based on exp_id found in frame info
+ *
+ * @param[in]	stream The stream.
+ * @param[in]	exp_id	The exposure id of the raw frame to tag.
+ *
+ * @return			IA_CSS_SUCCESS or error code upon error.
+ *
+ * This function allows the user to tag a raw frame based on the exposure id
+ * found in the viewfinder frames' frame info.
+ */
+enum ia_css_err
+ia_css_stream_capture_frame(struct ia_css_stream *stream,
+			unsigned int exp_id);
+
+/* ===== VIDEO ===== */
+
+/** @brief Send streaming data into the css input FIFO
+ *
+ * @param[in]	stream	The stream.
+ * @param[in]	data	Pointer to the pixels to be send.
+ * @param[in]	width	Width of the input frame.
+ * @param[in]	height	Height of the input frame.
+ * @return	None
+ *
+ * Send streaming data into the css input FIFO. This is for testing purposes
+ * only. This uses the channel ID and input format as set by the user with
+ * the regular functions for this.
+ * This function blocks until the entire frame has been written into the
+ * input FIFO.
+ *
+ * Note:
+ * For higher flexibility the ia_css_stream_send_input_frame is replaced by
+ * three separate functions:
+ * 1) ia_css_stream_start_input_frame
+ * 2) ia_css_stream_send_input_line
+ * 3) ia_css_stream_end_input_frame
+ * In this way it is possible to stream multiple frames on different
+ * channel ID's on a line basis. It will be possible to simulate
+ * line-interleaved Stereo 3D muxed on 1 mipi port.
+ * These 3 functions are for testing purpose only and can be used in
+ * conjunction with ia_css_stream_send_input_frame
+ */
+void
+ia_css_stream_send_input_frame(const struct ia_css_stream *stream,
+			       const unsigned short *data,
+			       unsigned int width,
+			       unsigned int height);
+
+/** @brief Start an input frame on the CSS input FIFO.
+ *
+ * @param[in]	stream The stream.
+ * @return	None
+ *
+ * Starts the streaming to mipi frame by sending SoF for channel channel_id.
+ * It will use the input_format and two_pixels_per_clock as provided by
+ * the user.
+ * For the "correct" use-case, input_format and two_pixels_per_clock must match
+ * with the values as set by the user with the regular functions.
+ * To simulate an error, the user can provide "incorrect" values for
+ * input_format and/or two_pixels_per_clock.
+ */
+void
+ia_css_stream_start_input_frame(const struct ia_css_stream *stream);
+
+/** @brief Send a line of input data into the CSS input FIFO.
+ *
+ * @param[in]	stream		The stream.
+ * @param[in]	data	Array of the first line of image data.
+ * @param	width	The width (in pixels) of the first line.
+ * @param[in]	data2	Array of the second line of image data.
+ * @param	width2	The width (in pixels) of the second line.
+ * @return	None
+ *
+ * Sends 1 frame line. Start with SoL followed by width bytes of data, followed
+ * by width2 bytes of data2 and followed by and EoL
+ * It will use the input_format and two_pixels_per_clock settings as provided
+ * with the ia_css_stream_start_input_frame function call.
+ *
+ * This function blocks until the entire line has been written into the
+ * input FIFO.
+ */
+void
+ia_css_stream_send_input_line(const struct ia_css_stream *stream,
+			      const unsigned short *data,
+			      unsigned int width,
+			      const unsigned short *data2,
+			      unsigned int width2);
+
+/** @brief Send a line of input embedded data into the CSS input FIFO.
+ *
+ * @param[in]	stream     Pointer of the stream.
+ * @param[in]	format     Format of the embedded data.
+ * @param[in]	data       Pointer of the embedded data line.
+ * @param[in]	width      The width (in pixels) of the line.
+ * @return		None
+ *
+ * Sends one embedded data line to input fifo. Start with SoL followed by
+ * width bytes of data, and followed by and EoL.
+ * It will use the two_pixels_per_clock settings as provided with the
+ * ia_css_stream_start_input_frame function call.
+ *
+ * This function blocks until the entire line has been written into the
+ * input FIFO.
+ */
+void
+ia_css_stream_send_input_embedded_line(const struct ia_css_stream *stream,
+			      enum ia_css_stream_format format,
+			      const unsigned short *data,
+			      unsigned int width);
+
+/** @brief End an input frame on the CSS input FIFO.
+ *
+ * @param[in]	stream	The stream.
+ * @return	None
+ *
+ * Send the end-of-frame signal into the CSS input FIFO.
+ */
+void
+ia_css_stream_end_input_frame(const struct ia_css_stream *stream);
+
+/** @brief send a request flash command to SP
+ *
+ * @param[in]	stream The stream.
+ * @return	None
+ *
+ * Driver needs to call this function to send a flash request command
+ * to SP, SP will be responsible for switching on/off the flash at proper
+ * time. Due to the SP multi-threading environment, this request may have
+ * one-frame delay, the driver needs to check the flashed flag in frame info
+ * to determine which frame is being flashed.
+ */
+void
+ia_css_stream_request_flash(struct ia_css_stream *stream);
+
+/** @brief Configure a stream with filter coefficients.
+ *  	   @deprecated {Replaced by
+ *  				   ia_css_pipe_set_isp_config_on_pipe()}
+ *
+ * @param[in]	stream The stream.
+ * @param[in]	config	The set of filter coefficients.
+ * @param[in]   pipe Pipe to be updated when set isp config, NULL means to
+ *		   update all pipes in the stream.
+ * @return		IA_CSS_SUCCESS or error code upon error.
+ *
+ * This function configures the filter coefficients for an image
+ * stream. For image pipes that do not execute any ISP filters, this
+ * function will have no effect.
+ * It is safe to call this function while the image stream is running,
+ * in fact this is the expected behavior most of the time. Proper
+ * resource locking and double buffering is in place to allow for this.
+ */
+enum ia_css_err
+ia_css_stream_set_isp_config_on_pipe(struct ia_css_stream *stream,
+			     const struct ia_css_isp_config *config,
+			     struct ia_css_pipe *pipe);
+
+/** @brief Configure a stream with filter coefficients.
+ *  	   @deprecated {Replaced by
+ *  				   ia_css_pipe_set_isp_config()}
+ * @param[in]	stream	The stream.
+ * @param[in]	config	The set of filter coefficients.
+ * @return		IA_CSS_SUCCESS or error code upon error.
+ *
+ * This function configures the filter coefficients for an image
+ * stream. For image pipes that do not execute any ISP filters, this
+ * function will have no effect. All pipes of a stream will be updated.
+ * See ::ia_css_stream_set_isp_config_on_pipe() for the per-pipe alternative.
+ * It is safe to call this function while the image stream is running,
+ * in fact this is the expected behaviour most of the time. Proper
+ * resource locking and double buffering is in place to allow for this.
+ */
+enum ia_css_err
+ia_css_stream_set_isp_config(
+	struct ia_css_stream *stream,
+	const struct ia_css_isp_config *config);
+
+/** @brief Get selected configuration settings
+ * @param[in]	stream	The stream.
+ * @param[out]	config	Configuration settings.
+ * @return		None
+ */
+void
+ia_css_stream_get_isp_config(const struct ia_css_stream *stream,
+			     struct ia_css_isp_config *config);
+
+/** @brief allocate continuous raw frames for continuous capture
+ * @param[in]	stream The stream.
+ * @return IA_CSS_SUCCESS or error code.
+ *
+ *  because this allocation takes a long time (around 120ms per frame),
+ *  we separate the allocation part and update part to let driver call
+ *  this function without locking. This function is the allocation part
+ *  and next one is update part
+ */
+enum ia_css_err
+ia_css_alloc_continuous_frame_remain(struct ia_css_stream *stream);
+
+/** @brief allocate continuous raw frames for continuous capture
+ * @param[in]	stream The stream.
+ * @return	IA_CSS_SUCCESS or error code.
+ *
+ *  because this allocation takes a long time (around 120ms per frame),
+ *  we separate the allocation part and update part to let driver call
+ *  this function without locking. This function is the update part
+ */
+enum ia_css_err
+ia_css_update_continuous_frames(struct ia_css_stream *stream);
+
+/** @brief ia_css_unlock_raw_frame . unlock a raw frame (HALv3 Support)
+ * @param[in]	stream The stream.
+ * @param[in]   exp_id exposure id that uniquely identifies the locked Raw Frame Buffer
+ * @return      ia_css_err IA_CSS_SUCCESS or error code
+ *
+ * As part of HALv3 Feature requirement, SP locks raw buffer until the Application
+ * releases its reference to a raw buffer (which are managed by SP), this function allows
+ * application to explicitly unlock that buffer in SP.
+ */
+enum ia_css_err
+ia_css_unlock_raw_frame(struct ia_css_stream *stream, uint32_t exp_id);
+
+/** @brief ia_css_en_dz_capt_pipe . Enable/Disable digital zoom for capture pipe
+ * @param[in]   stream The stream.
+ * @param[in]   enable - true, disable - false
+ * @return      None
+ *
+ * Enables or disables digital zoom for capture pipe in provided stream, if capture pipe
+ * exists. This function sets enable_zoom flag in CAPTURE_PP stage of the capture pipe.
+ * In process_zoom_and_motion(), decision to enable or disable zoom for every stage depends
+ * on this flag.
+ */
+void
+ia_css_en_dz_capt_pipe(struct ia_css_stream *stream, bool enable);
+#endif /* __IA_CSS_STREAM_PUBLIC_H */