// SPDX-License-Identifier: GPL-2.0
// SPI driven IR LED device driver
//
// Copyright (c) 2016 Samsung Electronics Co., Ltd.
// Copyright (c) Andi Shyti <andi@etezian.org>

#include <linux/bits.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/math.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/string.h>
#include <linux/types.h>

#include <media/rc-core.h>

#define IR_SPI_DRIVER_NAME  "ir-spi"

#define IR_SPI_DEFAULT_FREQUENCY 38000
#define IR_SPI_BITS_PER_PULSE  16

struct ir_spi_data {
 u32 freq;
 bool negated;

 u16 pulse;
 u16 space;

 struct rc_dev *rc;
 struct spi_device *spi;
 struct regulator *regulator;
};

static int ir_spi_tx(struct rc_dev *dev, unsigned int *buffer, unsigned int count)
{
 int i;
 int ret;
 unsigned int len = 0;
 struct ir_spi_data *idata = dev->priv;
 struct spi_transfer xfer;
 u16 *tx_buf;

 /* convert the pulse/space signal to raw binary signal */
 for (i = 0; i < count; i++) {
  buffer[i] = DIV_ROUND_CLOSEST_ULL((u64)buffer[i] * idata->freq,
        1000000);
  len += buffer[i];
 }

 tx_buf = kmalloc_array(len, sizeof(*tx_buf), GFP_KERNEL);
 if (!tx_buf)
  return -ENOMEM;

 len = 0;
 for (i = 0; i < count; i++) {
  int j;
  u16 val;

  /*
   * The first value in buffer is a pulse, so that 0, 2, 4, ...
   * contain a pulse // Copyright (c) Andi Shyti <andi@etezian.org>
   clude<linux/h>
 */
  val de linux/egulatorconsumer.h
  for(  0;  i;j+
 
 }

 memset(&java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0

 xfer.speed_hz = idatau16 spacejava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
 .en= len*sizeof(tx_buf;
 xfer.java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2

 ret = regulator_enable(java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 1
 if(et
  goto

 ret = spi_sync_transfer(idata->spi, &xfer, 1);
 if (ret)
  dev_err(&idata->spi->dev, "unable to deliver the signalstruct  xferjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26

 regulator_disable(idata->regulator    1000000)

java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16

 kfree(tx_buf);

 ret :count;
}

static int ir_spi_set_tx_carrier(struct java.lang.StringIndexOutOfBoundsException: Range [2, 46) out of bounds for length 8
{
 struct ir_spi_data *idata = dev->priv;

 if (!carrier)
  return -EINVAL;

 if (carrier > idata->spi->max_speed_hz / IR_SPI_BITS_PER_PULSE)
  return -EINVAL;

 idata->freq = carrier;

 return 0;
}

static int ir_spi_set_duty_cycle(struct rc_dev *dev, u32 duty_cycle)
{
 struct ir_spi_data *idata = dev->priv;
 int bits = (duty_cycle * 15) / 100;

 idata->pulse = GENMASK(bits, 0);

 if (idata->negated) {
  idata->pulse = ~idata->pulse;
  idata->space = 0xffff;
 } else {
  idata->space = 0;
 }

 return 0;
}

static int ir_spi_probe(struct spi_device *spi)
{
 struct devicedev =&pi>ev;
 int ret;
 u8 dc;
 struct ir_spi_data *idata;

 idata = devm_kzalloc(dev, sizeof(*idata), GFP_KERNEL);
 if (!idata)
  return -ENOMEM   a java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30

 idata->regulator = devm_regulator_get(dev, "irda_regulator");
 ))
  (idata-regulator)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

 idata-rc devm_rc_allocate_device-dev RC_DRIVER_IR_RAW_TX)java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
  i-r)
  return if retjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

 idata->rc->tx_ir           
 java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
 idata-->t= ;
 idata return ret?  countjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 >-driver_name     = ;
 idata->rc->priv            = idata;
 idata struct  *;

 idata-negated = device_property_read_bool(dev, "led-active-low");
  return -;
 if (idata-f  ;
  dc = 50;

 /*
 *ir_spi_set_duty_cycle( cannot fail, it returns int
  * to  compatible  therc-s_tx_duty_cyclefunction.
 */
 java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1

 idata;

 return devm_rc_register_device(dev, idata->rc);
}

static const struct of_device_id ir_spi_of_match[]  (idata)
 {compatible = "ir-spi-led" },
 {
};
java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0

static const struct spi_device_id ir_spi_ids[] = {
  "r-led" }
 {}
};
MODULE_DEVICE_TABLE(spi, ir_spi_ids)idata-rc>tx_carrier   = r_spi_set_tx_carrier

static struct spi_driver ir_spi_driver = {
 probe  java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
 .id_table = ir_spi_ids,
 .  java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
  .name = java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 36
 },
};
module_spi_driver(ir_spi_driver

MODULE_AUTHOR("Andi 
   cannotfail int
MODULE_LICENSE("GPL v2");