git.sur5r.net Git - u-boot/blob - drivers/power/pmic/muic_max8997.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  Copyright (C) 2012 Samsung Electronics
   4  *  Lukasz Majewski <l.majewski@samsung.com>
   5  */
   6
   7 #include <common.h>
   8 #include <power/pmic.h>
   9 #include <power/power_chrg.h>
  10 #include <power/max8997_muic.h>
  11 #include <i2c.h>
  12 #include <errno.h>
  13
  14 static int power_chrg_get_type(struct pmic *p)
  15 {
  16         unsigned int val;
  17         unsigned char charge_type, charger;
  18
  19         if (pmic_probe(p))
  20                 return CHARGER_NO;
  21
  22         pmic_reg_read(p, MAX8997_MUIC_STATUS2, &val);
  23         charge_type = val & MAX8997_MUIC_CHG_MASK;
  24
  25         switch (charge_type) {
  26         case MAX8997_MUIC_CHG_NO:
  27                 charger = CHARGER_NO;
  28                 break;
  29         case MAX8997_MUIC_CHG_USB:
  30         case MAX8997_MUIC_CHG_USB_D:
  31                 charger = CHARGER_USB;
  32                 break;
  33         case MAX8997_MUIC_CHG_TA:
  34         case MAX8997_MUIC_CHG_TA_1A:
  35                 charger = CHARGER_TA;
  36                 break;
  37         case MAX8997_MUIC_CHG_TA_500:
  38                 charger = CHARGER_TA_500;
  39                 break;
  40         default:
  41                 charger = CHARGER_UNKNOWN;
  42                 break;
  43         }
  44
  45         return charger;
  46 }
  47
  48 static struct power_chrg power_chrg_muic_ops = {
  49         .chrg_type = power_chrg_get_type,
  50 };
  51
  52 int power_muic_init(unsigned int bus)
  53 {
  54         static const char name[] = "MAX8997_MUIC";
  55         struct pmic *p = pmic_alloc();
  56
  57         if (!p) {
  58                 printf("%s: POWER allocation error!\n", __func__);
  59                 return -ENOMEM;
  60         }
  61
  62         debug("Board Micro USB Interface Controller init\n");
  63
  64         p->name = name;
  65         p->interface = PMIC_I2C;
  66         p->number_of_regs = MUIC_NUM_OF_REGS;
  67         p->hw.i2c.addr = MAX8997_MUIC_I2C_ADDR;
  68         p->hw.i2c.tx_num = 1;
  69         p->bus = bus;
  70
  71         p->chrg = &power_chrg_muic_ops;
  72         return 0;
  73 }