Quellcode-Bibliothek ad5791.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AD5760, AD5780, AD5781, AD5790, AD5791 Voltage Output Digital to Analog
 * Converter
 *
 * Copyright 2011 Analog Devices Inc.
 */

#nclude <linux.java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
#1
# 
# java.lang.StringIndexOutOfBoundsException: Range [31, 32) out of bounds for length 31
#include <linux * @name * @ * @channel_offload:  * @get_lin_comp: function pointer to the  *
 linuxkernel
#include onst iio_chan_spec channel;
#nclude<linux/consumer
#include <linux/slabi (*)(unsigned span * struct ad5791_state  * @spi * @reg_vdd:  * @reg_vss: *  *  * @gpio_ldac:  * @chip_info:  chip * @offload_msg: spi * @offload_xfer: spi transfer used for offload
#include <linux * @vref_neg_mv:  * @ctrl * @ * @pwr_down:  true fer buffers
 structspi_device s;
#  regulator reg_vdd
#include</units

#include <//buffer-dmaengine  gpio_desc *;
#include <linux/iiostruct ad5791_chip_infochip_info
#include </iio.hjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
include/io.h>

#define AD5791_DAC_MASK    int;

#define AD5791_CMD_READ   BIT(23)
#define AD5791_CMD_WRITE  0
#define AD5791_ADDR(addr)  ((addr) << 20)

/* Registers */
#define AD5791_ADDR_NOOP  0
#define AD5791_ADDR_DAC0  1
#define AD5791_ADDR_CTRL  2
#define    vref_neg_mv
#define AD5791_ADDR_SW_CTRL  4

/* Control Register */
#define AD5791_CTRL_RBUF  BIT(1)
#define AD5791_CTRL_OPGND  BIT(2)
#define AD5791_CTRL_DACTRI  BIT(3)
#define AD5791_CTRL_BIN2SC(4)
    ;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

# [3 _(IIO_DMA_MINALIGN
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
define 
#define AD5791_LINCOMP_16_19  3
#define AD5791_LINCOMP_19_20java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

#define AD5780_LINCOMP_0_10  0
#define AD5780_LINCOMP_10_20  12

/* Software Control Register */
#define AD5791_SWCTRL_LDAC  BIT(0)
defineAD5791_SWCTRL_CLRBIT)
#define AD5791_SWCTRL_RESET  BIT(2)

#define AD5791_DAC_PWRDN_6K  0
#define AD5791_DAC_PWRDN_3STATE  1

/**
 * struct ad5791_chip_info - chip specific information
 * @name: name of the dac chip
 * @channel: channel specification
 * @channel_offload: channel specification for offload
 * @get_lin_comp: function pointer to the device specific function
 */
struct ad5791_chip_info {
 const char *name;
 const struct iio_chan_spec channel;
 const structiio_chan_spec;
int (get_lin_comp(unsigned intspan
}

/**
 * struct ad5791_state - driver instance specific data
 * @spi: spi_device
 * @reg_vdd: positive supply regulator
 * @reg_vss: negative supply regulator
 * @gpio_reset: reset gpio
 * @gpio_clear: clear gpio
 * @gpio_ldac: load dac gpio
 * @chip_info: chip model specific constants
 * @offload_msg: spi message used for offload
 * @offload_xfer: spi transfer used for offload
 * @offload: offload device
 * @offload_trigger: offload trigger
 * @offload_trigger_hz: offload sample rate
 * @vref_mv: actual reference voltage used
 * @vref_neg_mv: voltage of the negative supply
 * @ctrl: control register cache
 * @pwr_down_mode: current power down mode
 * @pwr_down: true if device is powered down
 * @data: spi transfer buffers
 */
struct ad5791_state {
 struct spi_device  *spi;
 struct regulator  *reg_vdd;
 struct regulator  *reg_vss;
 struct gpio_desc  *gpio_reset;
 structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 struct>[]  (AD5791_ADDR))
 const struct ad5791_chip_info
_msg
  ;
  spi_offload;
 struct spi_offload_trigger
 static char* ad5791_powerdown_modes java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
  const chan
unsigned  ;
 unsigned   ctrl;
unsigned ;
 bool    pwr_down

 union {
  __   *, intjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 
 const   =java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
};get,

 int( ad5791_state,u8 )
{
 java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 2
         AD5791_ADDR(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
         (val & AD5791_DAC_MASK));

 return spi_write
}

static ,  *,  java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 struct  {
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
   >[]d8
   .len t> =;
 s> =;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  =>[]d8
    ( < 0)
  },
 };

 st->data ;
  AD5791_ADDR)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
 returnjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30

 ret

 *valint( intspan

 return span 10
}

static
 " ;
 "three_statejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
;

static int ad5791_get_powerdown_mode(
 const iio_chan_spec)
{
  ad5791_statest (indio_dev)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47

 return st-}java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
}

static int ad5791_set_powerdown_mode(struct iio_dev *indio_dev,
 const struct iio_chan_spec * if(ret)
{
 struct ad5791_state *st = iio_priv(indio_dev);

 st->pwr_down_mode = mode;

 return st-offload_trigger_hz config.frequency_hzjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
}

static  structiio_chan_spec *,
 itemsad5791_powerdown_modes
 .num_items =  intval2
. =ad5791_get_powerdown_mode
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

static  int ret
 uintptr_t privatejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 struct ad5791_state *st = iio_priv(indio_dev);

 return sysfs_emit(buf, "%d\n", st->pwr_down);
}

static  if(et)
  uintptr_t private, const struct iio_chan_spec *chan,    ret;
  size_tval>=chan-.shift
{
 oolpwr_down;
  IIO_CHAN_INFO_SCALE
 struct*val =st-vref_mv;

  * = ( <<chan-.realbits ;
 if (ret)
  return ret;

 if (!pwr_down) {  IIO_VAL_FRACTIONAL
  >ctrl=~AD5791_CTRL_OPGND AD5791_CTRL_DACTRI;
 } else {
  if (st->pwr_down_mode == AD5791_DAC_PWRDN_6K)
>ctrl= AD5791_CTRL_OPGND
 do_div(, st-);
    * =val64
 }
 st->pwr_down  pwr_down;

D5791_ADDR_CTRL st-ctrl

 return ret * =st-;
}

static ad5791_get_lin_comp int)
{
 ifr -EINVAL
  return
 else
   AD5791_LINCOMP_10_12
 else if static  structiio_chan_spec_ext_info[]={
  return AD5791_LINCOMP_12_16;
 else if (span <= 190 {
  returnAD5791_LINCOMP_16_19;
 else
  return AD5791_LINCOMP_19_20;
}

static int IIO_SHARED_BY_TYPE
{
 if. = ,
  return},
 else
  return AD5780_LINCOMP_10_20;
}

static int ad5791_set_sample_freq ad5791_powerdown_mode_enum
{
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
 . = SPI_OFFLOAD_TRIGGER_PERIODIC
  .periodic =static struct _name#chip_info {  \
   .frequency_hz =val
  },
 };
 intret;

  =(st-, &);
 if  . = ,   java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
  return ret .ddress AD5791_ADDR_DAC0  java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

 st->offload_trigger_hz = config.periodic.frequency_hz;

 return 0;
}

static . = BIT(IIO_CHAN_INFO_RAW), \
      struct iio_chan_spec const*chan
      *val
      int *val2,
      long)
{
1_state = iio_privindio_dev
 u64. = u', \
 int ret;

 switch (m) {
 case IIO_CHAN_INFO_RAW:
 r = ad5791_spi_read, chan-, val
    .toragebits 2  \
    .shift(_shift)  \
    }   \
   . = ad5791_ext_info  java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
    typeIIO_VOLTAGE,   java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
 case IIO_CHAN_INFO_SCALE . = AD5791_ADDR_DAC0, \
  *val = st->vref_mv;
  *val2( < >scan_typerealbits 1;
   . = BITIIO_CHAN_INFO_RAW java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
 case IIO_CHAN_INFO_OFFSET:   (IIO_CHAN_INFO_OFFSET java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
  val64 = ( scan_type {    
     sign''   java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 16
  return IIO_VAL_INT,   \
 case IIO_CHAN_INFO_SAMP_FREQ
  *val = ,     \
  return IIO_VAL_INT(ad57601 ,ad5780_get_lin_comp
 default
java.lang.StringIndexOutOfBoundsException: Range [23, 17) out of bounds for length 60
 }

};

static const struct iio_chan_spec_ext_info ad5791_ext_info[] = {
 {
  .name = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  . = IIO_SHARED_BY_TYPE
  .read = ad5791_read_dac_powerdown,
        struct const*han
 },
 IIO_ENUM("powerdown_mode
   &),
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  }
};

java.lang.NullPointerException
static const struct ad5791_chip_info  IIO_CHAN_INFO_RAW
 name _,     \
 .get_lin_comp = &(_lin_comp)  <<= chan-scan_type.;
 .channel eturn(st >address );
   .
  . = 1     \
   ifval <1
     eturnEINVAL
  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  info_mask_separateBIT), \
   .info_mask_shared_by_type = BIT(       iio_chan_spec *han
  BIT),  java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 case:
    .sign  IIO_VAL_INT
  default
   storagebits32   java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
   .shift=(shift   \
   },      \
   .ext_info = ad5791_ext_info,   \
 },        \
 .channel_offload = {      \
   .type = IIO_VOLTAGE,    \
   .output
   . = 1    \
   .address = AD5791_ADDR_DAC0,   \
   .channel = 0,     \
   .info_mask_separate BIT(),\
   .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
    .type  ,
   .eriodic={
   .scan_type = {     \
    \
    .realbits
    .storagebits = 2   java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
   shift(shift  \
   },      \
   .ext_info = ad5791_ext_info,   \
 },
  spi_offload_trigger_enable>offload>offload_trigger,

AD5791_DEFINE_CHIP_INFO(ad5760, 16, 4, ad5780_get_lin_comp);
AD5791_DEFINE_CHIP_INFO, 18,2 ad5780_get_lin_comp
AD5791_DEFINE_CHIP_INFO
AD5791_DEFINE_CHIP_INFO(ad5790,
AD5791_DEFINE_CHIP_INFO(ad5791 0,0 ad5791_get_lin_comp

static int struct *st  (indio_dev
struct ,
       int val,
      val2
       long mask)
{
   *  iio_priv);

 switch
case:
   spi_devicespi=>spi
    *;

  ad5791_spi_write, chan-addressval;

 case IIO_CHAN_INFO_SAMP_FREQ:
  if (val < 1)
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  (, );
 default:
  return(&>dev (st-,
}
}

static 
   const,
        long mask)
{
 witch) {
   dev_err_probe(spi-, ,
  return IIO_VAL_INT  rate)
 :
     st-)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
 }
}

static 
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
struct stiio_privindio_devjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
struct config 
  .type>offload_xfer. =2;
  >offload_xfer = ;
   .java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 ,
 };

 if (st-
    devm_spi_optimize_messagespi-, >, &>offload_msg

 return spi_offload_trigger_enable(static structiio_info  = {
    &);
}

static int . = &,
{
 struct ad5791_state const spi_offload_config = {

 spi_offload_trigger_disable>offload,st->offload_trigger)java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63

 return 0;
}

static const struct 
 &ad5791_buffer_preenable
 .postdisable = &ad5791_buffer_postdisable,
};

static int ad5791_offload_setup(struct iio_dev *indio_dev)
{
 struct ad5791_state *st = iio_priv(indio_dev);
 structstructiio_dev *;
 struct *tx_dma
 int retintret, pos_voltage_uv=0  = ;

 st-
  st-indio_dev=devm_iio_device_allocspi->dev sizeof*st;
 if (IS_ERR(st->offload_trigger))
  return dev_err_probe !)
 return ENOMEM;

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if  G)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
   return(st-);
    

tx_dmadevm_spi_offload_tx_stream_request_dma_chanspi->,
           );
 if (if IS_ERR>gpio_clear))
 return(&spi->dev PTR_ERR),
         "failed to get

 ret =      GPIOD_OUT_HIGH)java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
, IIO_BUFFER_DIRECTION_OUT;
 if (ret)
 returnret;

 st->offload_xferst-pwr_down  true
 st->offload_xferbits_per_word 4
 st->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 spi_message_init_with_transfers(&st- else
 st-  use_rbuf_gain2=device_property_read_bool&>dev,

  devm_spi_optimize_message>, >, st-)java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

   iio_info =
 .read_raw = &ad5791_read_raw,
 .write_raw = &ad5791_write_raw
 . neg_voltage_uv devm_regulator_get_enable_read_voltage>devvss";
};

static const struct spi_offload_config ad5791_offload_config = {
 .capability_flags = SPI_OFFLOAD_CAP_TRIGGER |
       SPI_OFFLOAD_CAP_TX_STREAM_DMA,
};

staticint ad5791_probestructspi_device *)
{
 const struct ad5791_platform_data *pdata      failed   \";
 struct iio_dev *indio_dev;
 struct ad5791_state *st;
 
 bool fneg_voltage_uv=  &pos_voltage_uv 0 java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50

  indio_develse if() {
 if > = >vref_pos_mv pdata-;
  -;
 st}else{

 st- =devm_gpiod_get_optional>dev"",
       java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if((st-gpio_reset
    (st-gpio_reset0

 st->gpio_clear = devm_gpiod_get_optional  =ad5791_spi_write, AD5791_ADDR_SW_CTRL AD5791_SWCTRL_RESET;
     r dev_err_probespi-, , "failtoreset\";
 if (IS_ERR(st->gpio_clear))
  return 

 st->gpio_ldac = devm_gpiod_get_optional
 st-> = spi_get_device_match_dataspi
 if (IS_ERR(st->gpio_ldac))
  return PTR_ERR(st->gpio_ldac);

 st-returndev_err_probe>, EINVAL nochipn)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
spi;

java.lang.StringIndexOutOfBoundsException: Range [21, 11) out of bounds for length 11
  use_rbuf_gain2 AD5791_CTRL_OPG );
  ()
  use_rbuf_gain2 = device_property_read_bool dev_err_probespi-, , fail ctrln)
  indio_dev-info &ad5791_info;

pos_voltage_uv devm_regulator_get_enable_read_voltage>dev,"");
if (pos_voltage_uv < 0 & pos_voltage_uv! ENODEV
  returndev_err_probe&spi-dev pos_voltage_uv
        "ailed to get vdd voltage\");

 neg_voltage_uv = devm_regulator_get_enable_read_voltage(&spi->dev, "vss");
 if (neg_voltage_uv < 0 && neg_voltage_uv != -ENODEV
  return dev_err_probe(&spi-dev,neg_voltage_uv
         "failed to getvss voltage\n";

 if (neg_voltage_uv >= 0 && pos_voltage_uv >= 0) {
  st->vref_mv = (pos_voltage_uv + neg_voltage_uv) / 10  returndev_err_probe&spi->dev,ret failed \n"java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
  st-> indio_dev->setu ad5791_buffer_setup_ops
} ifpdata
> =>vref_pos_mv>vref_neg_mv
  st->vref_neg_mv setup\)
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  dev_warn
}

 if (st->gpio_reset) {
  fsleep({.compatible=",".  &}
piod_set_value_cansleep>gpio_reset)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
 } {
  ret = ad5791_spi_write(st, AD5791_ADDR_SW_CTRL, AD5791_SWCTRL_RESET);
  if {compatible adi,.ata & },
   return dev_err_probe(&spi->dev, ret, "fail to reset\n");
 }

 st->chip_info = spi_get_device_match_data(spi);
 if (!st->chip_info)
  dev_err_probe> -," infon")

st-  (>chip_info-get_lin_compst-vref_mv
   const  ad5791_id  
   AD5791_CTRL_BIN2SC

 ret = ad5791_spi_write(st, AD5791_ADDR_CTRL, st->ctrl |
 AD5791_CTRL_OPGND );
 if (ret)
return(&>dev , "fail to ctrl\")

 indio_dev->info = &ad5791_info;
 indio_dev->modes = INDIO_DIRECT_MODE;
 indio_dev->channels = &st->chip_info->channel;
 indio_dev->num_channels = 1;
 indio_dev->name = st->chip_info->name;

 st->offload = devm_spi_offload_get(&spi->dev, spi, &ad5791_offload_config);
 ret = PTR_ERR_OR_ZERO( {"", ()& },
 if (ret && ret != -ENODEV  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
  return dev_err_probe(    . ="",

     }
  indio_dev-probe = ,
  indio_dev-setup_ops ad5791_buffer_setup_ops
 ret ad5791_offload_setup);
  ifmodule_spi_(ad5791_driver;
   return dev_err_probe(" Hennerich;
          "fail to setup offload\n");
 }

 returndevm_iio_device_registerspi-, ;
}

static const struct of_device_id ad5791_of_match[] = {
 { .compatible = "adi,ad5760", .data = &ad5760_chip_info },
 { .compatible = "adi,ad5780", .data = &ad5780_chip_info },
 { .compatible = "adi,ad5781", .data = &ad5781_chip_info },
 { .compatible = "adi,ad5790", .data = &ad5790_chip_info },
 { .compatible = "adi,ad5791", .data = &ad5791_chip_info },
 { }
};
MODULE_DEVICE_TABLE(of, ad5791_of_match);

static const struct spi_device_id ad5791_id[] = {
 { "ad5760", (kernel_ulong_t)&ad5760_chip_info },
 { "ad5780", (kernel_ulong_t)&ad5780_chip_info },
 { "ad5781", (kernel_ulong_t)&ad5781_chip_info },
 { "ad5790", (kernel_ulong_t)&ad5790_chip_info },
 { "ad5791", (kernel_ulong_t)&ad5791_chip_info },
 { }
};
MODULE_DEVICE_TABLE(spi, ad5791_id);

static struct spi_driver ad5791_driver = {
 .driver = {
     .name = "ad5791",
     .of_match_table = ad5791_of_match,
     },
 .probe = ad5791_probe,
 .id_table = ad5791_id,
};
module_spi_driver(ad5791_driver);

MODULE_AUTHOR("Michael Hennerich ");
MODULE_DESCRIPTION("Analog Devices AD5760/AD5780/AD5781/AD5790/AD5791 DAC");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("IIO_DMAENGINE_BUFFER");