2 * Copyright (C) 2013 Samsung Electronics
3 * Piotr Wilczek <p.wilczek@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
9 #include <power/pmic.h>
10 #include <power/max77693_pmic.h>
14 static int max77693_charger_state(struct pmic *p, int state, int current)
21 /* unlock write capability */
22 val = MAX77693_CHG_UNLOCK;
23 pmic_reg_write(p, MAX77693_CHG_CNFG_06, val);
25 if (state == CHARGER_DISABLE) {
26 puts("Disable the charger.\n");
27 pmic_reg_read(p, MAX77693_CHG_CNFG_00, &val);
29 pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
33 if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
34 printf("%s: Wrong charge current: %d [mA]\n",
39 /* set charging current */
40 pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
41 val &= ~MAX77693_CHG_CC;
42 val |= current * 10 / 333; /* 0.1A/3 steps */
43 pmic_reg_write(p, MAX77693_CHG_CNFG_02, val);
46 val = MAX77693_CHG_MODE_ON;
47 pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
49 /* check charging current */
50 pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
52 printf("Enable the charger @ %d [mA]\n", val * 333 / 10);
57 static int max77693_charger_bat_present(struct pmic *p)
64 pmic_reg_read(p, MAX77693_CHG_INT_OK, &val);
66 return !(val & MAX77693_CHG_DETBAT);
69 static struct power_chrg power_chrg_pmic_ops = {
70 .chrg_bat_present = max77693_charger_bat_present,
71 .chrg_state = max77693_charger_state,
74 int pmic_init_max77693(unsigned char bus)
76 static const char name[] = "MAX77693_PMIC";
77 struct pmic *p = pmic_alloc();
80 printf("%s: POWER allocation error!\n", __func__);
84 debug("Board PMIC init\n");
87 p->interface = PMIC_I2C;
88 p->number_of_regs = PMIC_NUM_OF_REGS;
89 p->hw.i2c.addr = MAX77693_PMIC_I2C_ADDR;
93 p->chrg = &power_chrg_pmic_ops;