1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2013 Samsung Electronics
4 * Piotr Wilczek <p.wilczek@samsung.com>
8 #include <power/pmic.h>
9 #include <power/max77693_pmic.h>
13 static int max77693_charger_state(struct pmic *p, int state, int current)
20 /* unlock write capability */
21 val = MAX77693_CHG_UNLOCK;
22 pmic_reg_write(p, MAX77693_CHG_CNFG_06, val);
24 if (state == PMIC_CHARGER_DISABLE) {
25 puts("Disable the charger.\n");
26 pmic_reg_read(p, MAX77693_CHG_CNFG_00, &val);
28 pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
32 if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
33 printf("%s: Wrong charge current: %d [mA]\n",
38 /* set charging current */
39 pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
40 val &= ~MAX77693_CHG_CC;
41 val |= current * 10 / 333; /* 0.1A/3 steps */
42 pmic_reg_write(p, MAX77693_CHG_CNFG_02, val);
45 val = MAX77693_CHG_MODE_ON;
46 pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
48 /* check charging current */
49 pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
51 printf("Enable the charger @ %d [mA]\n", val * 333 / 10);
56 static int max77693_charger_bat_present(struct pmic *p)
63 pmic_reg_read(p, MAX77693_CHG_INT_OK, &val);
65 return !(val & MAX77693_CHG_DETBAT);
68 static struct power_chrg power_chrg_pmic_ops = {
69 .chrg_bat_present = max77693_charger_bat_present,
70 .chrg_state = max77693_charger_state,
73 int pmic_init_max77693(unsigned char bus)
75 static const char name[] = "MAX77693_PMIC";
76 struct pmic *p = pmic_alloc();
79 printf("%s: POWER allocation error!\n", __func__);
83 debug("Board PMIC init\n");
86 p->interface = PMIC_I2C;
87 p->number_of_regs = PMIC_NUM_OF_REGS;
88 p->hw.i2c.addr = MAX77693_PMIC_I2C_ADDR;
92 p->chrg = &power_chrg_pmic_ops;