drivers/power/battery/bat_trats.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 <console.h>
   9 #include <log.h>
  10 #include <linux/delay.h>
  11 #include <power/pmic.h>
  12 #include <power/battery.h>
  13 #include <power/max8997_pmic.h>
  14 #include <errno.h>
  15
  16 static struct battery battery_trats;
  17
  18 static int power_battery_charge(struct pmic *bat)
  19 {
  20         struct power_battery *p_bat = bat->pbat;
  21         struct battery *battery = p_bat->bat;
  22         int k;
  23
  24         if (bat->chrg->chrg_state(p_bat->chrg, PMIC_CHARGER_ENABLE, 450))
  25                 return -1;
  26
  27         for (k = 0; bat->chrg->chrg_bat_present(p_bat->chrg) &&
  28                      bat->chrg->chrg_type(p_bat->muic) &&
  29                      battery->state_of_chrg < 100; k++) {
  30                 udelay(2000000);
  31                 if (!(k % 5))
  32                         puts(".");
  33                 bat->fg->fg_battery_update(p_bat->fg, bat);
  34
  35                 if (k == 200) {
  36                         debug(" %d [V]", battery->voltage_uV);
  37                         puts("\n");
  38                         k = 0;
  39                 }
  40
  41                 if (ctrlc()) {
  42                         printf("\nCharging disabled on request.\n");
  43                         goto exit;
  44                 }
  45         }
  46  exit:
  47         bat->chrg->chrg_state(p_bat->chrg, PMIC_CHARGER_DISABLE, 0);
  48
  49         return 0;
  50 }
  51
  52 static int power_battery_init_trats(struct pmic *bat_,
  53                                     struct pmic *fg_,
  54                                     struct pmic *chrg_,
  55                                     struct pmic *muic_)
  56 {
  57         bat_->pbat->fg = fg_;
  58         bat_->pbat->chrg = chrg_;
  59         bat_->pbat->muic = muic_;
  60
  61         bat_->fg = fg_->fg;
  62         bat_->chrg = chrg_->chrg;
  63         bat_->chrg->chrg_type = muic_->chrg->chrg_type;
  64         return 0;
  65 }
  66
  67 static struct power_battery power_bat_trats = {
  68         .bat = &battery_trats,
  69         .battery_init = power_battery_init_trats,
  70         .battery_charge = power_battery_charge,
  71 };
  72
  73 int power_bat_init(unsigned char bus)
  74 {
  75         static const char name[] = "BAT_TRATS";
  76         struct pmic *p = pmic_alloc();
  77
  78         if (!p) {
  79                 printf("%s: POWER allocation error!\n", __func__);
  80                 return -ENOMEM;
  81         }
  82
  83         debug("Board BAT init\n");
  84
  85         p->interface = PMIC_NONE;
  86         p->name = name;
  87         p->bus = bus;
  88
  89         p->pbat = &power_bat_trats;
  90         return 0;
  91 }