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 }
77