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 <log.h>
9 #include <power/pmic.h>
10 #include <power/power_chrg.h>
11 #include <power/max77693_muic.h>
12 #include <i2c.h>
13 #include <errno.h>
14 
power_chrg_get_type(struct pmic * p)15 static int power_chrg_get_type(struct pmic *p)
16 {
17 	unsigned int val;
18 	unsigned int charge_type, charger;
19 
20 	/* if probe failed, return cable none */
21 	if (pmic_probe(p))
22 		return CHARGER_NO;
23 
24 	pmic_reg_read(p, MAX77693_MUIC_STATUS2, &val);
25 
26 	charge_type = val & MAX77693_MUIC_CHG_MASK;
27 
28 	switch (charge_type) {
29 	case MAX77693_MUIC_CHG_NO:
30 		charger = CHARGER_NO;
31 		break;
32 	case MAX77693_MUIC_CHG_USB:
33 	case MAX77693_MUIC_CHG_USB_D:
34 		charger = CHARGER_USB;
35 		break;
36 	case MAX77693_MUIC_CHG_TA:
37 	case MAX77693_MUIC_CHG_TA_1A:
38 		charger = CHARGER_TA;
39 		break;
40 	case MAX77693_MUIC_CHG_TA_500:
41 		charger = CHARGER_TA_500;
42 		break;
43 	default:
44 		charger = CHARGER_UNKNOWN;
45 		break;
46 	}
47 
48 	return charger;
49 }
50 
51 static struct power_chrg power_chrg_muic_ops = {
52 	.chrg_type = power_chrg_get_type,
53 };
54 
power_muic_init(unsigned int bus)55 int power_muic_init(unsigned int bus)
56 {
57 	static const char name[] = "MAX77693_MUIC";
58 	struct pmic *p = pmic_alloc();
59 
60 	if (!p) {
61 		printf("%s: POWER allocation error!\n", __func__);
62 		return -ENOMEM;
63 	}
64 
65 	debug("Board Micro USB Interface Controller init\n");
66 
67 	p->name = name;
68 	p->interface = PMIC_I2C;
69 	p->number_of_regs = MUIC_NUM_OF_REGS;
70 	p->hw.i2c.addr = MAX77693_MUIC_I2C_ADDR;
71 	p->hw.i2c.tx_num = 1;
72 	p->bus = bus;
73 
74 	p->chrg = &power_chrg_muic_ops;
75 
76 	return 0;
77 }
78