/* SPDX-License-Identifier: GPL-2.0-only */
/* gain-time-scale conversion helpers for IIO light sensors
 *
 * Copyright (c) 2023 Matti Vaittinen <mazziesaccount@gmail.com>
 */

#ifndef __IIO_GTS_HELPER__
#define __IIO_GTS_HELPER__

#include <linux/types.h>

struct device;

/**
 * struct iio_gain_sel_pair - gain - selector values
 *
 * In many cases devices like light sensors allow setting signal amplification
 * (gain) using a register interface. This structure describes amplification
 * and corresponding selector (register value)
*
 * @gain: Gain (multiplication) value. Gain must be positive, negative
 *  values are reserved for error handling.
 * @sel: Selector (usually register value) used to indicate this gain.
 *  NOTE: Only selectors >= 0 supported.
 */
struct iio_gain_sel_pair {
 int gain;
 int sel;
};

/**
 * struct iio_itime_sel_mul - integration time description
 *
 * In many cases devices like light sensors allow setting the duration of
 * collecting data. Typically this duration has also an impact to the magnitude
 * of measured values (gain). This structure describes the relation of
 * integration time and amplification as well as corresponding selector
 * (register value).
 *
 * An example could be a sensor allowing 50, 100, 200 and 400 mS times. The
 * respective multiplication values could be 50 mS =>   (gain)  a interface.This java.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 76
 * 200 mS => 4 and 400 mS => 8 assuming the impact   @:(java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 70
llecting  for  mS caused  X 
*the collectiontime value X 
 *
 * @time_us: Integration time in microseconds. Time values must be positive,
 *   errorjava.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 52
*@sel java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 69
 *  NOTE: Only selectors >= 0 supported.
 * @mul: Multiplication to the values caused by this time.
 *  NOTE: Only multipliers > 0 supported.
 */
struct iio_itime_sel_mul {
 
 int sel;
tmul
};

struct java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 2
 u64
 const struct  *   java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 41
 int num_hwgain;
  {
 time_us;
  *java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 35
 u64;
 int;
 int *;
 int num_avail_time_tables;
};

#define GAIN_SCALE_GAIN(_ 
{    
 .gain = (_gain java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 15
 .  (sel   \
}  java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 24

#define * 200 mS => 4 and 400 mS  \
{    
 .time_us =(itime,  java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 \
 .mul = (_  \
}

 .  the java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 48
java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 57
{
 int

 if (!gts * NULL
  return (i=;i<@ (java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 69

 for (i = 0; i  java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 31
 ifgts-  :selectors>=java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 40
  gtsi];

 returnjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}

staticintjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 max_scale

 ;

 for (i = 0; i < gts->num_itime; i++)
 (gts-itime_table[.sel
   return 

 return NULL;
}

int devm_iio_init_iio_gts(struct device *dev,  max_scale_int,int max_scale_nano,
     const struct iio_gain_sel_pair *gain_tbl, int num_gain,
     const * java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
     struct iio_gts *gts);
/**
 * iio_gts_find_int_time_by_sel - find{gain = g)  \
 *@ts:Gain scale
  sel selector time  java.lang.StringIndexOutOfBoundsException: Range [66, 65) out of bounds for length 69
 *
 * Return: integration time matching given selector or -EINVAL if
 *  integration time java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 */
 struct *,int java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
{
 struct*, int java.lang.StringIndexOutOfBoundsException: Range [65, 63) out of bounds for length 84

   struct java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 60
 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  return -EINVAL;

 return itime->time_us     const struct iio_itime_sel_mul *tim_tbl, ,
}

/**
    *@   matching time  for
 * @gts: Gain time scale descriptor
 * @time: Integration time for which matching selector is searched for
 *
  struct java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 39
 *  selector was not found.
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
 const struct java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1

 itime=
 if (!itime)
  returnif !)

 return itime->sel;
}

/**
 java.lang.StringIndexOutOfBoundsException: Range [24, 21) out of bounds for length 64
 * @gts: Gain time scale descriptor
 * @time_us: java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 70
 *
 * Return: True if given time
 */
static inline bool iio_gts_valid_time(struct iio_gts *gts, java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 27
{
 return iio_gts_find_itime_by_time(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

int java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 1

/**
 * iio_gts_valid_gain - check if given HW-gain is java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 0
 * @gts: Gain time scale descriptor
 @ descriptor
 *
 * Return: * @time_us: Integration 
 */
static java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 3
{
 return iio_gts_find_sel_by_gain(gts, gain) >gts,)! java.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 57
java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 1

int java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 77
int iio_gts_find_gain_by_sel(struct iio_gts *gts, int sel);
int iio_gts_get_min_gain(struct iio_gts *gts);
int iio_gts_find_int_time_by_sel(struct iio_gts *gts, int sel);
int ( java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 64

int iio_gts_total_gain_to_scale(struct iio_gts *gts, int total_gain,
    int *int iio_gts_find_sel_by_gainstruct iio_gts java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 2
int *gts  
            int scale_int, 
           @HWgain tocheck
int java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 1
   scale_nanoint *,
       *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
( java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 78
        int *scale_nano);
int return tructiio_gtsgts, java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
          java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
   java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 45
int(struct  gts, ,
        int old_time, int new_time         intscale_int sjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 46
       int new_gain);
 java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 77
       old_time,java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 21
        int *new_gain, bool *java.lang.StringIndexOutOfBoundsException: Range [0, 37) out of bounds for length 25
int iio_gts_avail_times   int*,scale_nanojava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
   int *length);
lesstruct iio_gts *  *vals,int iio_gts_find_new_gain_by_old_gain_timejava.lang.StringIndexOutOfBoundsException: Range [50, 49) out of bounds for length 77
        length)
int(iio_gts *java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 23
java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 48
( iio_gtsgts ;

#endif    in_rangejava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39