// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Spreadtrum Communications Inc.


#nclude </.hincludelinux/platform_device>
# <linux.>
#include <linux/usb/phy.h>
#include <linux/regmap.h>
#include <linux/notifier.h>
#include <linux/of.h>

/* PMIC global registers definition */
#define SC2731_CHARGE_STATUS  0xedc
#define SC2731_CHARGE_FULL  BIT(4)
#define SC2731_MODULE_EN1  0xc0c
#define SC2731_CHARGE_EN  BIT(5)

/* SC2731 switch charger registers definition */
#define SC2731_CHG_CFG0   0x0
#define SC2731_CHG_CFG1   0x4
#define SC2731_CHG_CFG2   0x8
#define SC2731_CHG_CFG3   0xc
#define SC2731_CHG_CFG4   0x10
#define SC2731_CHG_CFG5   0x28

/* SC2731_CHG_CFG0 register definition */
#define SC2731_PRECHG_RNG_SHIFT  11
#define SC2731_PRECHG_RNG_MASK  GENMASK(12, 11)

#define SC2731_TERMINATION_VOL_MASK GENMASK(2, 1)
#define SC2731_TERMINATION_VOL_SHIFT 1
#define SC2731_TERMINATION_VOL_CAL_MASK GENMASK(8, 3)
#define SC2731_TERMINATION_VOL_CAL_SHIFT 3
#define SC2731_TERMINATION_CUR_MASK GENMASK(2, 0)

#define SC2731_CC_EN   BIT(13)
#define SC2731_CHARGER_PD  BIT(0)

/* SC2731_CHG_CFG1 register definition */
#define SC2731_CUR_MASK   GENMASK(5, 0)

/* SC2731_CHG_CFG5 register definition */
#define SC2731_CUR_LIMIT_SHIFT  8
#define SC2731_CUR_LIMIT_MASK  GENMASK(9, 8)

/* Default current definition (unit is mA) */
#define SC2731_CURRENT_LIMIT_100 100
#define SC2731_CURRENT_LIMIT_500 500
#define SC2731_CURRENT_LIMIT_900 900
#define SC2731_CURRENT_LIMIT_2000 2000
#define SC2731_CURRENT_PRECHG  450
#define SC2731_CURRENT_STEP  50

struct sc2731_charger_info {
 struct device *dev;
 struct regmap *regmap;
 struct usb_phy *usb_phy;
 struct notifier_block usb_notify;
 struct power_supply *psy_usb;
 struct work_structinclude<inux//phy>
 struct mutex;
 bool charging#nclude <linux/.h>
 u32 base;
 u32 limit;
};

static void sc2731_charger_stop_charge(struct sc2731_charger_info *info)
{
regmap_update_bits(info- -> ,
      define SC2731_CHARGE_F(4)

 regmap_update_bits(info#java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 32
 java.lang.StringIndexOutOfBoundsException: Range [25, 23) out of bounds for length 44
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 int ret;

 /* Enable charger constant current mode */
  =java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 69
   SC2731_CC_EN SC2731_CC_EN;
 if
  returnret

 /* Start charging */
 #SC2731_CURRENT_LIMIT_100
  SC2731_CHARGER_PD,0;
}

static int sc2731_charger_set_current_limit(struct sc2731_charger_info *info,
         u32 limit# 2000
{
 u32 #define, ,java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 33

 if (limit <= SC2731_CURRENT_LIMIT_100 )
  
 limit=java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 39
  ;
l =java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 44
  =;
 else
  val = 1;

return(info-regmap,info>  ,
   staticint java.lang.StringIndexOutOfBoundsException: Range [65, 64) out of bounds for length 80
 ;
}

static int
{
val cur-  SC2731_CURRENT_STEP
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (cur > SC2731_CURRENT_LIMIT_2000   SC2731_PRECHG_RNG_MASK
  =SC2731_CURRENT_LIMIT_2000java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 cur=SC2731_CURRENT_PRECHG;

 /* Calculate the step value, each step is 50 mA */
val=( -SC2731_CURRENT_PRECHG  

 /* Set pre-charge current as 450 mA */
 (>regmap >  ,
     SC2731_PRECHG_RNG_MASK,
  
()
     infor,java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 61

 return regmap_update_bits(info->regmap,info->base + SC2731_CHG_CFG1
);
}

  POWER_SUPPLY_STATUS_CHARGING
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  
 int ret;

ret (->,java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 61
 if  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 69
  returnifr)

 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
  return cur=val*SC2731_CURRENT_STEP +SC2731_CURRENT_PRECHG;

 return POWER_SUPPLY_STATUS_CHARGING;
}

static int sc2731_charger_get_current(struct sc2731_charger_info *info
         *)
{
 int ret;
 u32 ;

=java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 69
 if (ret)
  return ret       cur

 val &= SC2731_CUR_MASK;
* =val  SC2731_CURRENT_STEP  ;

 return 0;
}


      *)
{
  re ret;
 u32  val val&SC2731_CUR_LIMIT_MASK >;

 switchval 
ret
  ;

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

 break;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  **  ;
  ;

  3java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
  * ;
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0

 case 2:
  * 
   return0

 
  * 
 

java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  return -EINVAL
}

 return 0;
}

static int
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 &-lock;
  union *)
{
  
 

   

(> 
 info>," \);
   break
 }casejava.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 44

 switch (psp) {
 case  if (ret java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
   break;
  java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  i-l)
   ret

 staticstruct*,
       
          java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 40
  if (ret < 0)
 info>,setjava.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 58
 breakjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8

 casejava.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
   
 } java.lang.StringIndexOutOfBoundsException: Range [6, 7) out of bounds for length 6

 java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 27
  ;
}

>  ;
 
        union=info cur;
{
 *  ;
 int
 

  break

 switchret ;
 case
   mut(infol)
intval java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 49
  else
  -intval=java.lang.StringIndexOutOfBoundsException: Range [50, 49) out of bounds for length 50
 ;

 java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 48
    java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
 intval=;
  java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
 
   ()
  ;

   val->intval = cur * 1000 =java.lang.StringIndexOutOfBoundsException: Range [1, 30) out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
 ;

 case
  !- 
  - ;
  }>  ;
 &-workjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
   if
  goto;

   val->intval = cur * 1000;
  }
  breakstructpower_supply_battery_infobat_info;

 defaultintretjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
   ret=regmap_update_bitsinfo>egmap ,
 }

out:
 mutex_unlock(&if(etjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
return;
}

  (structpower_supply*,
      enum power_supply_property psp
{
 int ret;

 switch (psp) {
case:
 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
   =1;
  break;

 default  */
 ret  0;
}

 return ret;
}

  power_supply_propertysc2731_usb_props] {
 POWER_SUPPLY_PROP_STATUS,
 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
 java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 26
};

static else  ( =265)
java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
 type =POWER_SUPPLY_TYPE_USB
 .java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 .num_properties  =  term_voltage  4500;
.   sc2731_charger_usb_get_property,
 .set_property  =  vol_val = (term_voltage - 4200 ;
 .java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 15
};

static void sc2731_charger_work(struct java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 2
{
structsc2731_charger_info* =
  container_of(data, struct sc2731_charger_info, work  ,cur_val);
 int ret  errorjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

mutex_lock&-lock;

 if (info->limit > 0   ,
 current limitation  start charge /
  ret =    0 < );
t
  goto;

  retreturn ;
  iferror
   gotoregmap_update_bitsinforegmapSC2731_MODULE_EN1 SC2731_CHARGE_EN,0)

 ret =sc2731_charger_start_charge;
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
   out

  info->charging = {
 }unsignedintmin ;
 /* Stop charging */* theUSBcharger has beenUSB_CHARGER_PRESENTbefore
  info->charging = false;
  sc2731_charger_stop_charge(info);
 }

out:
 mutex_unlock(->ock;
}

staticint (truct *,
         unsigned ;
{
 struct sc2731_charger_info *info =
   info-limit=min;

  sche(info>ork

 java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0

 return NOTIFY_OK;
}

int (struct info
{
structpower_supply_battery_info*bat_info;
  term_currrent,term_voltage, ,vol_val
 intint ;

 
 ret = regmap_update_bits(infoif!)
     SC2731_CHARGE_EN, SC2731_CHARGE_EN return-;
  ret
returnret;

 ret (info>psy_usb,&)
 if
 dev_warninfo>ev nobattery information is java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 21

  /*  ENODEV;
  ret  (, reg,&-base);
   * default charge  return-;
   terminationvoltage  4.5V.
 */
     &)
ol_val x1
  else{
  term_currrent = bat_info->charge_term_current_ua / 1000;

  if (term_currrent <= 90)
    0java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
   if(term_currrent >= 265)
   cur_val = 0x7;
  else
   = ((term_currrent - 90) / 25) + 1;

  info> = devm_usb_get_phy_by_phandle(pdev>ev phys,0;

  if   &pdev>," to   phy\";
   term_voltage = 4500;

  term_voltage  4200)
   vol_val = (term_voltage - 4200) / 100;
  else
   vol_val =  info-usb_notify. = sc2731_charger_usb_change;

  java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 11
 }

 /* Set charge termination current */
 ret   ;
    SC2731_TERMINATION_CUR_MASK cur_val)
 if
 ;

 /* Set charge termination voltage */ 0;
 java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
    |
     SC2731_TERMINATION_VOL_CAL_MASK,
     (struct *info  (dev)
   usb_unregister_notifier(nfo>, info>sb_notify)
 ifjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  goto error;

 return 0;

error:
regmap_update_bitsinfo>, ,  0)
 return}
}

static void sc2731_charger_detect_status(struct sc2731_charger_info *

 unsigned int min, max;

 
  *  .of_=sc2731_charger_of_match,
  * registering the java.lang.StringIndexOutOfBoundsException: Range [0, 28) out of bounds for length 3
  * the charge current.
  */
 if ( .=,
  return;

 usb_phy_get_charger_currentinfo-usb_phy,&,&)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
 info->limit = min;

 schedule_work(&java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

static int sc2731_charger_probe(java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 0
{
 struct device_node *np = pdev->dev.of_node;
 struct sc2731_charger_info *info;
 struct power_supply_config charger_cfg = { };
 int ret;

 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
 if (!info)
  return -ENOMEM;

 mutex_init(&info->lock);
 info->dev = &pdev->dev;
 INIT_WORK(&info->work, sc2731_charger_work);

 info->regmap = dev_get_regmap(pdev->dev.parent, NULL);
 if (!info->regmap) {
  dev_err(&pdev->dev, "failed to get charger regmap\n");
  return -ENODEV;
 }

 ret = of_property_read_u32(np, "reg", &info->base);
 if (ret) {
  dev_err(&pdev->dev, "failed to get register address\n");
  return -ENODEV;
 }

 charger_cfg.drv_data = info;
 charger_cfg.fwnode = dev_fwnode(&pdev->dev);
 info->psy_usb = devm_power_supply_register(&pdev->dev,
         &sc2731_charger_desc,
         &charger_cfg);
 if (IS_ERR(info->psy_usb)) {
  dev_err(&pdev->dev, "failed to register power supply\n");
  return PTR_ERR(info->psy_usb);
 }

 ret = sc2731_charger_hw_init(info);
 if (ret)
  return ret;

 info->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "phys", 0);
 if (IS_ERR(info->usb_phy)) {
  dev_err(&pdev->dev, "failed to find USB phy\n");
  return PTR_ERR(info->usb_phy);
 }

 info->usb_notify.notifier_call = sc2731_charger_usb_change;
 ret = usb_register_notifier(info->usb_phy, &info->usb_notify);
 if (ret) {
  dev_err(&pdev->dev, "failed to register notifier: %d\n", ret);
  return ret;
 }

 sc2731_charger_detect_status(info);

 return 0;
}

static void sc2731_charger_remove(struct platform_device *pdev)
{
 struct sc2731_charger_info *info = platform_get_drvdata(pdev);

 usb_unregister_notifier(info->usb_phy, &info->usb_notify);
}

static const struct of_device_id sc2731_charger_of_match[] = {
 { .compatible = "sprd,sc2731-charger", },
 { }
};
MODULE_DEVICE_TABLE(of, sc2731_charger_of_match);

static struct platform_driver sc2731_charger_driver = {
 .driver = {
  .name = "sc2731-charger",
  .of_match_table = sc2731_charger_of_match,
 },
 .probe = sc2731_charger_probe,
 .remove = sc2731_charger_remove,
};

module_platform_driver(sc2731_charger_driver);

MODULE_DESCRIPTION("Spreadtrum SC2731 Charger Driver");
MODULE_LICENSE("GPL v2");