Quelle  rtc-ds1390.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * rtc-ds1390.c -- driver for the Dallas/Maxim DS1390/93/94 SPI RTC
 *
 * Copyright (C) 2008 Mercury IMC Ltd
 * Written by Mark Jackson <mpfj@mimc.co.uk>
 *
 * NOTE: Currently this driver only supports the bare minimum for read
 * and write the RTC. The extra features provided by the chip family
 * (alarms, trickle charger, different control registers) are unavailable.
 */

#nclude <inux/nit.>
include/module
#nclude </platform_device
# <linux/tch>
# <linux/spi>
#include <linux/bcd.h>
#include <linux/slab.h>
#include <linux/of.h>

#define DS1390_REG_100THS  0x00
#define DS1390_REG_SECONDS  0x01
#define DS1390_REG_MINUTES  0x02
#define DS1390_REG_HOURS  0x03
#define DS1390_REG_DAY   0x04
#define DS1390_REG_DATE   0x05
#define DS1390_REG_MONTH_CENT  0x06
#define DS1390_REG_YEAR   0x07

#define DS1390_REG_ALARM_100THS  0x08
#define DS1390_REG_ALARM_SECONDS 0x09
#define DS1390_REG_ALARM_MINUTES 0x0A
#define DS1390_REG_ALARM_HOURS  0x0B
#define DS1390_REG_ALARM_DAY_DATE 0x0C

#define DS1390_REG_CONTROL  0x0D
#define DS1390_REG_STATUS  0x0E
#define DS1390_REG_TRICKLE  0x0F

#define DS1390_TRICKLE_CHARGER_ENABLE 0xA0
#define DS1390_TRICKLE_CHARGER_250_OHM 0x01
#define DS1390_TRICKLE_CHARGER_2K_OHM 0x02
#define DS1390_TRICKLE_CHARGER_4K_OHM 0x03
#define DS1390_TRICKLE_CHARGER_NO_DIODE 0x04
#define DS1390_TRICKLE_CHARGER_DIODE 0x08

struct/bcd>
  rtc_device *tc;
 u8 txrx_buf[9]; /* cmd + 8 registers */
}

static ds1390_set_regstruct device,unsigned address
   DS1390_REG_SECONDS
#efine DS1390_REG_MINUTES
  spi_devicespi=to_spi_device);
 unsigned buf]

 * MSB must be '1' to write */
 buf[0] = address | 0define  0java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
 buf[1#efineDS1390_REG_ALARM_DAY_DATE

(spi, 2;
}

static int ds1390_get_reg(struct device DS1390_REG_TRICKLE x0F
    unsigned chardefine 0xA0
{
 structdefine 0x02
  *chipdev_get_drvdata);
#efine DS1390_TRICKLE_CHARGER_NO_DIODE

 if (!data)
  return

java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
  txrx_buf;/* cmd + 8 registers */
 /* do the i/o */ void ds1390_set_reg(truct  *dev char,
status(spichip-t, 1 >txrx_buf1;
 if (status != 0)
  return status;

 *data = chip-

 return char[2];
}

static void ds1390_trickle_of_init(struct spi_device *spi)
{
 u32 ohms = 0;
 u8

 if((spi-.of_nodetrickle-resistor-ohms",
     &ohms))
  goto out;

 /* Enable charger */
 value = DS1390_TRICKLE_CHARGER_ENABLE; [0] addressx80
 if (f_property_read_bool(pi->.of_nodetrickle-diode-disable)
  value |= DS1390_TRICKLE_CHARGER_NO_DIODE;
 else
s(spi , 2java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 /* Resistor select */
 switch (ohms) {
 case 250:
  value |= DS1390_TRICKLE_CHARGER_250_OHM  chardata
 break
 ase:
lue | DS1390_TRICKLE_CHARGER_2K_OHM;
    (datareturn -INVAL;
 case40:
 /* Clear MSB to indicate read */
  break;
 default:
  dev_warn(&spi->txrx_buf] address &07java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
   "nsupported %2 \ohms;
  return;
 }

  if (status !

out ;
 return;
}

staticstatic  ds1390_trickle_of_init spi_device)
{
 struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct ds1390 *chip  &hms)
 int

 /* build the message */
[0]=DS1390_REG_SECONDS

 /* do the i/o */
 status = spi_write_then_read(spi, chip->txrx_buf, 1, chip->txrx_buf value | DS1390_TRICKLE_CHARGER_NO_DIODE;
 if (status != 0)
 return status;

/
  * Seconds ,Hours,DateMonth ,Yearjava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
  value |=  break caseue |= DS1390_TRICKLE_CHARGER_4K_OHM;
 dt->tm_min =  return }
 dt->tm_hour =
  return}
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
{
 dt->tm_mon = bcd2bin struct ds1390 * int
 centurybit /
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 return 0;
}

static int ds1390_set_time(struct device *dev, struct rtc_time *dt)
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
   * Seconds,
 struct ds1390 *chip (hip->[0];

 /* build the message */> = bcd2bin>txrx_buf]java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
 chip->xrx_buf]=DS1390_REG_SECONDS|0x80java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
 chip-[1]  bin2bcd>tm_sec
 chip-[2] =bin2bcd>tm_min
 chip->txrx_buf[3]dt-tm_year (chip-[6] +(chip-[5]&0) ? 0  );
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
chip-[5]=bin2bcd>tm_mday
 chip->txrx_buf[6] = bin2bcd(dt->java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
    ((dt->tm_year ds1390 = (dev;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 /* do the i/o */
 return spi_write_then_read( >txrx_buf]=bin2bcd>tm_sec
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static const struct rtc_class_ops ds1390_rtc_ops = {
 .ead_time,
 set_time,
}; >txrx_buf]=bin2bcddt- + )|

static int ds1390_probe(struct  chip->txrx_buf[7] = bin2bcd(dt->tm_year
{
}
 struct ds1390 *chip;
 int const rtc_class_ops ={

 >modeSPI_MODE_3
 spi- = 8;
 spi_setup

chip =devm_kzalloc(spi->, (*), );
 if (!chip
  -;

t_drvdata, chip


 if ( != ) java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
  dev_err =(&>dev(*chip GFP_KERNEL;
  return res;
 }

 if(>dev)
 

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   &ds1390_rtc_ops,);
 if (IS_ERR( if ( !=0 {
  (&spi-, "nable toregisterdevice\"
  res res
}

 return res;
}

static const spi-.)
 {.ompatible = "allas,ds1390"}
 {}
}
(of);

static  dev_err(>devunable evice)
 {. = "" },
 {}

returnres

static struct  struct ds1390_of_match_ = {
 .driver = {
  .name = "rtc-ds1390",
  .of_match_table= of_match_ptr(ds1390_of_match),
 },
 .probe = ds1390_probe,
 .id_table = {
}

module_spi_driver);

MODULE_DESCRIPTION consts spi_device_id[] ={
("ark Jackson mpfj@imc.ouk"java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
MODULE_LICENSE
static struct ds1390_driverjava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42