MAJOR=7
MINOR=130
DEVNAME=vcsa2
  *   €l–Ь4э( ©і( 	ЕЂfаB¦-яїѓ|O·_†I|ҐЏ+ГВ $O    /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * v4l2-dv-timings - Internal header with dv-timings helper functions
 *
 * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 */

#ifndef __V4L2_DV_TIMINGS_H
#define __V4L2_DV_TIMINGS_H

#include <linux/videodev2.h>

/**
 * v4l2_calc_timeperframe - helper function to calculate timeperframe based
 *	v4l2_dv_timings fields.
 * @t: Timings for the video mode.
 *
 * Calculates the expected timeperframe using the pixel clock value and
 * horizontal/vertical measures. This means that v4l2_dv_timings structure
 * must be correctly and fully filled.
 */
struct v4l2_fract v4l2_calc_timeperframe(const struct v4l2_dv_timings *t);

/*
 * v4l2_dv_timings_presets: list of all dv_timings presets.
 */
extern const struct v4l2_dv_timings v4l2_dv_timings_presets[];

/**
 * typedef v4l2_check_dv_timings_fnc - timings check callback
 *
 * @t: the v4l2_dv_timings struct.
 * @handle: a handle from the driver.
 *
 * Returns true if the given timings are valid.
 */
typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle);

/**
 * v4l2_valid_dv_timings() - are these timings valid?
 *
 * @t:	  the v4l2_dv_timings struct.
 * @cap: the v4l2_dv_timings_cap capabilities.
 * @fnc: callback to check if this timing is OK. May be NULL.
 * @fnc_handle: a handle that is passed on to @fnc.
 *
 * Returns true if the given dv_timings struct is supported by the
 * hardware capabilities and the callback function (if non-NULL), returns
 * false otherwise.
 */
bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t,
			   const struct v4l2_dv_timings_cap *cap,
			   v4l2_check_dv_timings_fnc fnc,
			   void *fnc_handle);

/**
 * v4l2_enum_dv_timings_cap() - Helper function to enumerate possible DV
 *	 timings based on capabilities
 *
 * @t:	  the v4l2_enum_dv_timings struct.
 * @cap: the v4l2_dv_timings_cap capabilities.
 * @fnc: callback to check if this timing is OK. May be NULL.
 * @fnc_handle: a handle that is passed on to @fnc.
 *
 * This enumerates dv_timings using the full list of possible CEA-861 and DMT
 * timings, filtering out any timings that are not supported based on the
 * hardware capabilities and the callback function (if non-NULL).
 *
 * If a valid timing for the given index is found, it will fill in @t and
 * return 0, otherwise it returns -EINVAL.
 */
int v4l2_enum_dv_timings_cap(struct v4l2_enum_dv_timings *t,
			     const struct v4l2_dv_timings_cap *cap,
			     v4l2_check_dv_timings_fnc fnc,
			     void *fnc_handle);

/**
 * v4l2_find_dv_timings_cap() - Find the closest timings struct
 *
 * @t:	  the v4l2_enum_dv_timings struct.
 * @cap: the v4l2_dv_timings_cap capabilities.
 * @pclock_delta: maximum delta between t->pixelclock and the timing struct
 *		under consideration.
 * @fnc: callback to check if a given timings struct is OK. May be NULL.
 * @fnc_handle: a handle that is passed on to @fnc.
 *
 * This function tries to map the given timings to an entry in the
 * full list of possible CEA-861 and DMT timings, filtering out any timings
 * that are not supported based on the hardware capabilities and the callback
 * function (if non-NULL).
 *
 * On success it will fill in @t with the found timings and it returns true.
 * On failure it will return false.
 */
bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
			      const struct v4l2_dv_timings_cap *cap,
			      unsigned pclock_delta,
			      v4l2_check_dv_timings_fnc fnc,
			      void *fnc_handle);

/**
 * v4l2_find_dv_timings_cea861_vic() - find timings based on CEA-861 VIC
 * @t:		the timings data.
 * @vic:	CEA-861 VIC code
 *
 * On success it will fill in @t with the found timings and it returns true.
 * On failure it will return false.
 */
bool v4l2_find_dv_timings_cea861_vic(struct v4l2_dv_timings *t, u8 vic);

/**
 * v4l2_match_dv_timings() - do two timings match?
 *
 * @measured:	  the measured timings data.
 * @standard:	  the timings according to the standard.
 * @pcloc