git.sur5r.net Git - u-boot/blob - drivers/power/mfd/muic_max77693.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2013 Samsung Electronics
   4  * Piotr Wilczek <p.wilczek@samsung.com>
   5  */
   6
   7 #include <common.h>
   8 #include <power/pmic.h>
   9 #include <power/power_chrg.h>
  10 #include <power/max77693_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 int charge_type, charger;
  18
  19         /* if probe failed, return cable none */
  20         if (pmic_probe(p))
  21                 return CHARGER_NO;
  22
  23         pmic_reg_read(p, MAX77693_MUIC_STATUS2, &val);
  24
  25         charge_type = val & MAX77693_MUIC_CHG_MASK;
  26
  27         switch (charge_type) {
  28         case MAX77693_MUIC_CHG_NO:
  29                 charger = CHARGER_NO;
  30                 break;
  31         case MAX77693_MUIC_CHG_USB:
  32         case MAX77693_MUIC_CHG_USB_D:
  33                 charger = CHARGER_USB;
  34                 break;
  35         case MAX77693_MUIC_CHG_TA:
  36         case MAX77693_MUIC_CHG_TA_1A:
  37                 charger = CHARGER_TA;
  38                 break;
  39         case MAX77693_MUIC_CHG_TA_500:
  40                 charger = CHARGER_TA_500;
  41                 break;
  42         default:
  43                 charger = CHARGER_UNKNOWN;
  44                 break;
  45         }
  46
  47         return charger;
  48 }
  49
  50 static struct power_chrg power_chrg_muic_ops = {
  51         .chrg_type = power_chrg_get_type,
  52 };
  53
  54 int power_muic_init(unsigned int bus)
  55 {
  56         static const char name[] = "MAX77693_MUIC";
  57         struct pmic *p = pmic_alloc();
  58
  59         if (!p) {
  60                 printf("%s: POWER allocation error!\n", __func__);
  61                 return -ENOMEM;
  62         }
  63
  64         debug("Board Micro USB Interface Controller init\n");
  65
  66         p->name = name;
  67         p->interface = PMIC_I2C;
  68         p->number_of_regs = MUIC_NUM_OF_REGS;
  69         p->hw.i2c.addr = MAX77693_MUIC_I2C_ADDR;
  70         p->hw.i2c.tx_num = 1;
  71         p->bus = bus;
  72
  73         p->chrg = &power_chrg_muic_ops;
  74
  75         return 0;
  76 }