LXR uboot/drivers/power/pmic/muic

   1/*
   2 *  Copyright (C) 2012 Samsung Electronics
   3 *  Lukasz Majewski <l.majewski@samsung.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <power/pmic.h>
  10#include <power/power_chrg.h>
  11#include <power/max8997_muic.h>
  12#include <i2c.h>
  13#include <errno.h>
  14
  15static int power_chrg_get_type(struct pmic *p)
  16{
  17        unsigned int val;
  18        unsigned char charge_type, charger;
  19
  20        if (pmic_probe(p))
  21                return CHARGER_NO;
  22
  23        pmic_reg_read(p, MAX8997_MUIC_STATUS2, &val);
  24        charge_type = val & MAX8997_MUIC_CHG_MASK;
  25
  26        switch (charge_type) {
  27        case MAX8997_MUIC_CHG_NO:
  28                charger = CHARGER_NO;
  29                break;
  30        case MAX8997_MUIC_CHG_USB:
  31        case MAX8997_MUIC_CHG_USB_D:
  32                charger = CHARGER_USB;
  33                break;
  34        case MAX8997_MUIC_CHG_TA:
  35        case MAX8997_MUIC_CHG_TA_1A:
  36                charger = CHARGER_TA;
  37                break;
  38        case MAX8997_MUIC_CHG_TA_500:
  39                charger = CHARGER_TA_500;
  40                break;
  41        default:
  42                charger = CHARGER_UNKNOWN;
  43                break;
  44        }
  45
  46        return charger;
  47}
  48
  49static struct power_chrg power_chrg_muic_ops = {
  50        .chrg_type = power_chrg_get_type,
  51};
  52
  53int power_muic_init(unsigned int bus)
  54{
  55        static const char name[] = "MAX8997_MUIC";
  56        struct pmic *p = pmic_alloc();
  57
  58        if (!p) {
  59                printf("%s: POWER allocation error!\n", __func__);
  60                return -ENOMEM;
  61        }
  62
  63        debug("Board Micro USB Interface Controller init\n");
  64
  65        p->name = name;
  66        p->interface = PMIC_I2C;
  67        p->number_of_regs = MUIC_NUM_OF_REGS;
  68        p->hw.i2c.addr = MAX8997_MUIC_I2C_ADDR;
  69        p->hw.i2c.tx_num = 1;
  70        p->bus = bus;
  71
  72        p->chrg = &power_chrg_muic_ops;
  73        return 0;
  74}
  75