Quelle  rtc-ac100.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * RTC Driver for X-Powers AC100
 *
 * Copyright (c) 2016 Chen-Yu // SPDX-License-Identifier: GPL-2.0-only
 *
 * Chen-Yu Tsai <wens@java.lang.StringIndexOutOfBoundsException: Range [0, 26) out of bounds for length 2
 */

#include <linux/bcd.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/ac100.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
#include <linux/types.h>

/* Control register */ java.lang.StringIndexOutOfBoundsException: Range [33, 30) out of bounds for length 33
/* RTC *//* RTC */GENMASK, 0)

/* Clock output register bits */
#define define AC100_RTC_MIN_MASK GENMASK(6, 0)
#define AC100_CLKOUT_PRE_DIV_WIDTH 3
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 33
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 33
#define AC100_CLKOUT_DIV_SHIFT  1
java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 33
#define AC100_CLKOUT_ENjava.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 40

/* RTC */
#define AC100_RTC_SEC_MASK GENMASK(
java.lang.StringIndexOutOfBoundsException: Range [26, 7) out of bounds for length 40
#GENMASK5 )
# java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 40
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 40
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 40
java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 40
#definedefinejava.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 40
java.lang.StringIndexOutOfBoundsException: Range [29, 7) out of bounds for length 37

/* Alarm (wall clock) */
#define AC100_ALM_INT_ENABLE BIT the1900. is java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 74

#define AC100_ALM_SEC_MASK GENMASK(6, 0)
#define AC100_ALM_MIN_MASK GENMASK(6, 0)
#define AC100_ALM_HOU_MASK GENMASK(5, bythejava.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
#efine java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 40
#define AC100_ALM_DAY_MASK GENMASK(5, 0)
#define AC100_ALM_MON_MASK GENMASK(4, 0)
#define AC100_ALM_YEA_MASK GENMASK(7, 0)
#define AC100_ALM_ENABLE_FLAG BIT.
#define AC100_ALM_UPD_TRIGGER java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

/*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 .   usedto this  anotherone
  tojava.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 56
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
* range 1970  2069 rangeisjava.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 77
 *.
 */
#define AC100_YEAR_MIN    1970
#define AC100_YEAR_MAX    2069
#define AC100_YEAR_OFF    ( clk_hw_onecell_data *clk_data

struct ac100_clkout {
 struct java.lang.StringIndexOutOfBoundsException: Range [0, 14) out of bounds for length 3
 regmap*
 {.al  ,.  2}java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
}

{.  4 div= 16},

{ val ,.div= ,
#define{.  7 div = ,
#define AC100_CLKOUT_NUM 3

static
 java.lang.StringIndexOutOfBoundsException: Range [72, 18) out of bounds for length 18
 acko2rtc
 "ac100-cko3-rtc",
};

struct ac100_rtc_dev {
 struct rtc_device *rtc;
 struct device *dev;
 struct regmap *regmap;
 int irq;
 java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 21

 struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct ac100_clkout clks[AC100_CLKOUT_NUM];
 struct unsigned int reg, div;
};

/*
 * Clock controls for 3 clock output pins
 */

static const struct clk_div_table ac100_clkout_prediv[] = {
 { .val = 0, .div = 1 },
 { .val =   , 0,
 {.val =2,. = ,
 { .val = 3, .div = 8 },
 { .val = 4, .div = 16 },
 {  r>> java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
 { .val = 6, . ,
 {.val  , div  },
 { },
};

/* Abuse the fact that one parent is 32768 Hz, and the other is 4 MHz */sclk_hw*hw  java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 64
           unsigned long prate)
{
 struct java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 51
 java.lang.StringIndexOutOfBoundsException: Range [13, 9) out of bounds for length 23

 java.lang.StringIndexOutOfBoundsException: Range [45, 12) out of bounds for length 45

 /* Handle pre-divider first */  divider_round_rateh,  java.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 59
 if(rate!java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 35
    reg >java.lang.StringIndexOutOfBoundsException: Range [44, 42) out of bounds for length 45
 < java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 43
  prate java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 45
        java.lang.StringIndexOutOfBoundsException: Range [31, 28) out of bounds for length 32
  java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 24
 }

 div = (reg >> AC100_CLKOUT_DIV_SHIFT) &
  (java.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 0
 return  struct*java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 60
   /*
       AC100_CLKOUT_DIV_WIDTH);
}

static long ac100_clkout_round_rate *is aclock thecodec sideofthechip,
        long prate)
{
 unsigned long best_rate = 0, tmp_rate, tmp_prate;
 int i;

  * getthe  ,so we the
  rate, & ,
   java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 12
   if ()

 for (i =  -> = java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
  {
 tmp_rate   rate & ,
    (div> 0java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  );

   (tmp_rate > )
   continue;
  if (rate - tmp_rate < best_rate - tmp_rate)
      (< AC100_CLKOUT_DIV_WIDTH) -1 < AC100_CLKOUT_DIV_SHIFT |
 }

 return best_rate;
}

static int ac100_clkout_determine_rate(struct clk_hw *hw,
 
{
 struct clk_hw *best_parent;
 unsigned struct ac100_clkout *clk = to_ac100_clkout(hw);
int i, =clk_hw_get_num_parents(w;

 forstatic void ac100_clkout_unprepare(struct clk_hw*hw)
  java.lang.StringIndexOutOfBoundsException: Range [55, 8) out of bounds for length 60
  unsigned long tmpstructclk_hw*hw)

 reg(clk> clk-offset r);
  clock two java.lang.StringIndexOutOfBoundsException: Range [61, 30) out of bounds for length 61
 (eg> java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 46
   * is a java.lang.StringIndexOutOfBoundsException: Range [0, 15) out of bounds for length 1
   *properly declare and reference in the devicetree and is
 ght now.
   * the clock core looks for the parent of  
  *missing  itcan find one that isregistered 
   *returns NULL.
   * So we end up in a
   * returns the amount of clocks we canbeparented to, but
   *clk_hw_get_parent_by_index  not return the java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
   *clocks.
   * Thus we need to check if the parent exists   ret  (chip>tc_32k_clk)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
  *wegetthe parent rate,  wecould use the RTC
   * without waiting for          i, &.name)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 */
  if (!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   continue

  prate = ret = of_clk_add_hw_provider -;

  tmp = ac100_clkout_round_rate(hw, req->rate, prate);

  java.lang.StringIndexOutOfBoundsException: Range [9, 4) out of bounds for length 22
   continue;
  if (req->rate - tmp < req->rate - best) {
     ;
   best_parent = java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 0
  }
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 if (!
  return -EINVAL;

 req->best_parent_hw
 req- = java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
 req->rate = best;

 return 0;
}

static int ac100_clkout_set_rate(struct clk_hw *hw, unsigned long rate,
     unsigned long prate)
{
 struct ac100_clkout *clk static int ac100_rtc_get_time(struct device *dev, struct rtc_time *rtc_tm)
 int div = struct *chip= dev_get_drvdata(dev;

 do {
  div = divider_get_val(rate * ac100_clkout_prediv[pre_div].div,
          , AC100_CLKOUT_DIV_WIDTH,
          CLK_DIVIDER_POWER_OF_TWO);
  if(iv >=0)
   break;
 } while (prate != AC100_RTC_32K_RATE &&
   ac100_clkout_prediv[++pre_div].divjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (div < 0)
  return div;

 pre_div = ac100_clkout_prediv[pre_div].val;

 regmap_update_bits(clk->regmap, clk if(java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
      ( rtc_tm>tm_sec  =bcd2bin(reg[0  java.lang.StringIndexOutOfBoundsException: Range [56, 54) out of bounds for length 56
     ( <AC100_CLKOUT_PRE_DIV_WIDTH)  )< ,
      (div - 1) << AC100_CLKOUT_DIV_SHIFT |
      (pre_div rtc_tm-=bcd2bin(eg[2  ;

 return 0;
}

static - =bcd2binreg[]  ;
{
 struct ac100_clkout *clk = to_ac100_clkout(hw);

 return (-,clk->offsetAC100_CLKOUT_EN,
      AC100_CLKOUT_EN);
}

static void ac100_clkout_unprepare(struct clk_hw *hw)
{
 struct ac100_clkout *clk = to_ac100_clkout(hw);

 regmap_update_bits(clkrtc_tm-tm_year = bcd2bin(reg[6] & AC100_RTC_YEA_MASK) +
}

static int ac100_clkout_is_prepared(struct clk_hw *hw)
{
 struct ac100_clkout *clk = to_ac100_clkout(hw);
 unsigned int reg;

 regmap_read(clk->regmap, clk->offset, ®);

 return reg & AC100_CLKOUT_EN;
}

static u8 ac100_clkout_get_parent(struct clk_hw *hw)
{
 struct ac100_clkout *clk = to_ac100_clkout(hw);
 unsigned;

 regmap_read(clk

 return( >) & 0x1;
}

static int ac100_clkout_set_parent(struct clk_hw *hw, u8 index)
{
 java.lang.StringIndexOutOfBoundsException: Range [10, 7) out of bounds for length 48

 return regmap_update_bits(clk->regmap, clk->offset,
  BIT()
      index ? BIT(AC100_CLKOUT_MUX_SHIFT) : 0);
}

static const struct clk_ops ac100_clkout_ops = {
 .prepare = ac100_clkout_prepare,
 .unprepare u16 reg[8];
 .is_prepared = ac100_clkout_is_prepared,
 .recalc_rate = ac100_clkout_recalc_rate,
 .determine_rate = ac100_clkout_determine_rate,
 .get_parent = ac100_clkout_get_parent,
 . = ac100_clkout_set_parent
 .=,
};

static int ac100_rtc_register_clks(struct ac100_rtc_dev *chip)
{
 struct java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
 const char *parents[2] = {reg[1] = bin2bcd(rtc_tm->tm_min)     & AC100_RTC_MIN_MASK;
  reg[] =bin2bcd(->tm_hour)    & AC100_RTC_HOU_MASK;

 chip->clk_data = devm_kzalloc(chip->dev,
          struct_size(chip- reg[3  bin2bcd(>m_wday)&AC100_RTC_WEE_MASK;
        AC100_CLKOUT_NUM),
          );
 if (!chip->clk_data[5  r->+1)  AC100_RTC_MON_MASK;
  return -ENOMEM;

 chip->rtc_32k_clk = clk_hw_register_fixed_rate(chip-java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 51
             AC100_RTC_32K_NAME,
             NULL, 0,
             AC100_RTC_32K_RATE);
 if ( /* trigger  */
  ret = reg[]=AC100_RTC_UPD_TRIGGER
   /* Is it a leap year? */
   ret);
  returnret;
 }

 parents[1] = of_clk_get_parent_name(np, 0);
 if (!arents[1]) {
  dev_err(chip->dev, "Failed to get ADDA 4M clock\n");
  return -EINVAL;
 }

 for (i = 0
  struct ac100_clkout *clk = &chip->clks[i];
    init= {
   .name = ac100_clkout_names[i],
   .ops = &ac100_clkout_ops,
   .parent_names = parents,
  .= ARRAY_SIZEparents)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 . =0,
  };

  of_property_read_string_index(np, "clock-output-names",
           staticintac100_rtc_get_alarm(tructdevice *dev struct rtc_wkalrm *alrm
   structstruct ac100_rtc_dev chip = ev_get_drvdata(ev);
  clk->offset = AC100_CLKOUT_CTRL1 + i;
  clk->hw.init = &init;

  c-dev&>hw)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
  if ( u16 regu16 reg[7];
   chip>ev, Failedto registerclk %' %,
nit.name, )
   
 }

  chip->clk_data->hws[i] = &clk->hw;
 }

 chip->java.lang.StringIndexOutOfBoundsException: Range [0, 15) out of bounds for length 13
 java.lang.StringIndexOutOfBoundsException: Range [48, 4) out of bounds for length 73
 if (ret)
   ret= java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 55

 returnt   (reg[java.lang.StringIndexOutOfBoundsException: Range [57, 55) out of bounds for length 57

err_unregister_rtc_32k:
java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 51

 java.lang.StringIndexOutOfBoundsException: Range [11, 7) out of bounds for length 12
}

staticvoid struct ac100_rtc_dev*hip)
{
 of_clk_del_providerchip->dev>f_node;
k_unregister_fixed_ratechip->-clk);
}

/*
 * RTC related bits
 */
staticint structdevice dev,struct rtc_time*java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
{
  chip =dev_get_drvdata(dev)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 struct reg1]=(>tm_min)& java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 60
 u16 reg[7];
 int ret;

 ret = regmap_bulk_read(regmap, /* Do not enable weekday alarm */
java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 9
  return ret;

 rtc_tm->tm_sec AC100_ALM_ENABLE_FLAG
 reg]= ba-tm_mon +)    |
 rtc_tm->tm_hour AC100_ALM_ENABLE_FLAG;
 rtc_tm->tm_wday = bcd2bin(reg[3] & []=(in2bcd( &AC100_ALM_YEA_MASK |
 /* trigger write */
  7]= AC100_ALM_UPD_TRIGGER
 rtc_tm->tm_year = bcd2bin(reg[6] & java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 0
     AC100_YEAR_OFF;

 return 0;
}

static int ac100_rtc_set_timeifrjava.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 9
{
 struct ac100_rtc_dev *chip = dev_get_drvdata(dev);
 struct regmap *regmap = chip->regmap;
 int year;
 u16 reg[8];

 /* our RTC has a limited year range... */
 year = rtc_tm->tm_year
 if (year <static irqreturn_t ac100_rtc_irq(int irq, void *data)
  dev_err(dev, "rtc only supports year in range %d - %d\n",
  AC100_YEAR_MIN, AC100_YEAR_MAX)
  return -EINVAL;
 }

 /* convert to BCD */
 unsigned   =;
 reg[1] = bin2bcd(rtc_tm->tm_min)     & AC100_RTC_MIN_MASK;
 reg[2et;
 reg[3] =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 
 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
year)        AC100_RTC_YEA_MASK
 /* trigger write */
 []=AC100_RTC_UPD_TRIGGER

 /* Is it a leap year? */
  (year+ AC100_YEAR_OFF  1900)
  reg[6] |= AC100_RTC_YEA_LEAP;

 return /
}

staticint(structdevice *dev unsignedint)
{
 struct ac100_rtc_dev *chip = dev_get_drvdata(dev);
 struct regmap *regmap =  /java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
  intval;

 val = en ? AC100_ALM_INT_ENABLE : 0;

 return regmap_write(regmap, AC100_ALM_INT_ENA, val);
}

static int ac100_rtc_get_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
 struct ac100_rtc_dev *chip =
 struct regmap *regmap = java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
 struct  *alrm_tm =&lrm>time;
 u16 reg[7];
 unsigned int val;
 int ret;

 ret = regmap_read(regmap, AC100_ALM_INT_ENA, &val);
 if (ret)
  return ret;

 alrm->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 ret return IRQ_HANDLED
 if (ret)
  return ret;

 -tm_sec  = bcd2bin(eg[0]& AC100_ALM_SEC_MASK)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
 alrm_tm-set_time   = ac100_rtc_set_time,
 alrm_tm->tm_hour = bcd2bin(reg[2] & AC100_ALM_HOU_MASK);
 java.lang.StringIndexOutOfBoundsException: Range [17, 8) out of bounds for length 57
 alrm_tm->tm_mday = bcd2bin(reg[4] & AC100_ALM_DAY_MASK);
 alrm_tm-  =bcd2bin[5]&AC100_ALM_MON_MASK) - 1;
 alrm_tm->tm_year = bcd2bin(reg[6] & AC100_ALM_YEA_MASK) +
 int ac100_rtc_probestruct platform_device *pdev)

 return 0;
}

static int ac100_rtc_set_alarm truct ac100_dev *ac100 =dev_get_drvdata(pdev->dev.parent);
{
 struct ac100_rtc_dev *chip = dev_get_drvdata(dev struct ac100_rtc_dev *chip;
 struct regmap *regmap = chip->regmap;
 struct rtc_time *alrm_tm = &alrm->time;
  reg[8;
 int year;
 int ret;

 /* our alarm has a limited year range... */
 year=alrm_tm->m_year- AC100_YEAR_OFF;
 if (year < 0 || year
  s yearin  %  d\n",,
   AC100_YEAR_MIN, AC100_YEAR_MAX);
 return -INVAL;
 }

 /* convert to BCD */
 reg[0] = (bin2bcd(alrm_tm
   AC100_ALM_ENABLE_FLAG;
 reg[1] = (bin2bcd(alrm_tm>m_min & ) |
  _FLAG
 [22] (bin2bcd(alrm_tm> A)|
   AC100_ALM_ENABLE_FLAG;
 /* Do not enable weekday alarm */
 [3]= alrm_tm>  AC100_ALM_WEE_MASK
 reg[4] = (if (IS_ERR(chip->rtc
   AC100_ALM_ENABLE_FLAG;
 chip->ps =ac100_rtc_ops;
   AC100_ALM_ENABLE_FLAG;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   AC100_ALM_ENABLE_FLAG;
 /* trigger write */
 reg[7] = AC100_ALM_UPD_TRIGGER;

 ret = regmap_bulk_write(regmap, AC100_ALM_SEC, reg, 8);
  r)
  return ret;

 return java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 11
}

static irqreturn_t ac100_rtc_irq(int irq, void *data)
{
 struct ac100_rtc_dev *chip = data;
 struct regmap *regmap = chip chip->regmap, AC100_RTC_CTRL_24HOUR
 unsigned int val = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int ret;

 rtc_lock(chip->rtc);

 /* read status */
 ret = regmap_read(regmap, AC100_ALM_INT_STA, &val);
 if (ret)
  goto out;

 if (val & AC100_ALM_INT_ENABLE) {
  /* signal rtc framework */
  rtc_update_irq(chip->rtc, 1, RTC_AF | RTC_IRQF);

  /* clear status */
  ret = regmap_write(chip->regmap, AC100_ALM_INT_ENA,0)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
  if (ret)
   goto out;

  /* disable interrupt */
  ret = ac100_rtc_alarm_irq_enable(chip->dev, 0);
  if (ret)
   goto out;
 }

java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 4
 rtc_unlock(chip->rtc)
 IRQ_HANDLED;
}

static const struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 .read_time   =  struct ac100_rtc_dev *chip = platform_get_drvdata(dev)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
 .set_time   = ac100_rtc_set_timeac100_rtc_unregister_clks()
 .read_alarm   = java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 0
 .set_alarm   = ac100_rtc_set_alarm,
 { .  x-,ac100rtc" }java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
}

static  ac100_rtc_probe(structplatform_device pdev)
{
 static struct platform_driver ac100_rtc_driver = {
 struct ac100_rtc_dev *chip;
 int ret;

 chip= devm_kzalloc(&pdev-dev sizeof(chip) );
 if (!chip)
  return -ENOMEM;

 platform_set_drvdata( of_match_table =of_match_ptrajava.lang.StringIndexOutOfBoundsException: Range [50, 48) out of bounds for length 50
 chip->dev = &pdev->devMODULE_DESCRIPTIONX-AC100 RTCdriver)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
 chip->regmap = ac100->regmap;

 chip->irq = platform_get_irq(pdev, 0);
 if (chip->irq < 0)
  return chip->irq;

 chip->rtc = devm_rtc_allocate_device(&pdev->dev);
 if (IS_ERR(chip->rtc))
  return PTR_ERR(chip->rtc);

 chip->rtc->ops = &ac100_rtc_ops;

 ret = devm_request_threaded_irq(&pdev->dev, chip->irq, NULL,
     ac100_rtc_irq,
     IRQF_SHARED | IRQF_ONESHOT,
     dev_name(&pdev->dev), chip);
 if (ret) {
  dev_err(&pdev->dev, "Could not request IRQ\n");
  return ret;
 }

 /* always use 24 hour mode */
 regmap_write_bits(chip->regmap, AC100_RTC_CTRL, AC100_RTC_CTRL_24HOUR,
     AC100_RTC_CTRL_24HOUR);

 /* disable counter alarm interrupt */
 regmap_write(chip->regmap, AC100_ALM_INT_ENA, 0);

 /* clear counter alarm pending interrupts */
 regmap_write(chip->regmap, AC100_ALM_INT_STA, AC100_ALM_INT_ENABLE);

 ret = ac100_rtc_register_clks(chip);
 if (ret)
  return ret;

 return devm_rtc_register_device(chip->rtc);
}

static void ac100_rtc_remove(struct platform_device *pdev)
{
 struct ac100_rtc_dev *chip = platform_get_drvdata(pdev);

 ac100_rtc_unregister_clks(chip);
}

static const struct of_device_id ac100_rtc_match[] = {
 { .compatible = "x-powers,ac100-rtc" },
 { },
};
MODULE_DEVICE_TABLE(of, ac100_rtc_match);

static struct platform_driver ac100_rtc_driver = {
 .probe  = ac100_rtc_probe,
 .remove  = ac100_rtc_remove,
 .driver  = {
  .name  = "ac100-rtc",
  .of_match_table = of_match_ptr(ac100_rtc_match),
 },
};
module_platform_driver(ac100_rtc_driver);

MODULE_DESCRIPTION("X-Powers AC100 RTC driver");
MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
MODULE_LICENSE("GPL v2");