1/*
2 * max14577.h - Driver for the Maxim 14577/77836
3 *
4 * Copyright (C) 2014 Samsung Electrnoics
5 * Chanwoo Choi <cw00.choi@samsung.com>
6 * Krzysztof Kozlowski <k.kozlowski@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * This driver is based on max8997.h
19 *
20 * MAX14577 has MUIC, Charger devices.
21 * The devices share the same I2C bus and interrupt line
22 * included in this mfd driver.
23 *
24 * MAX77836 has additional PMIC and Fuel-Gauge on different I2C slave
25 * addresses.
26 */
27
28#ifndef __MAX14577_H__
29#define __MAX14577_H__
30
31#include <linux/regulator/consumer.h>
32
33/* MAX14577 regulator IDs */
34enum max14577_regulators {
35	MAX14577_SAFEOUT = 0,
36	MAX14577_CHARGER,
37
38	MAX14577_REGULATOR_NUM,
39};
40
41/* MAX77836 regulator IDs */
42enum max77836_regulators {
43	MAX77836_SAFEOUT = 0,
44	MAX77836_CHARGER,
45	MAX77836_LDO1,
46	MAX77836_LDO2,
47
48	MAX77836_REGULATOR_NUM,
49};
50
51struct max14577_regulator_platform_data {
52	int id;
53	struct regulator_init_data *initdata;
54	struct device_node *of_node;
55};
56
57struct max14577_charger_platform_data {
58	u32 constant_uvolt;
59	u32 fast_charge_uamp;
60	u32 eoc_uamp;
61	u32 ovp_uvolt;
62};
63
64/*
65 * MAX14577 MFD platform data
66 */
67struct max14577_platform_data {
68	/* IRQ */
69	int irq_base;
70
71	/* current control GPIOs */
72	int gpio_pogo_vbatt_en;
73	int gpio_pogo_vbus_en;
74
75	/* current control GPIO control function */
76	int (*set_gpio_pogo_vbatt_en) (int gpio_val);
77	int (*set_gpio_pogo_vbus_en) (int gpio_val);
78
79	int (*set_gpio_pogo_cb) (int new_dev);
80
81	struct max14577_regulator_platform_data *regulators;
82};
83
84/*
85 * Valid limits of current for max14577 and max77836 chargers.
86 * They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
87 * register for given chipset.
88 */
89struct maxim_charger_current {
90	/* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
91	unsigned int min;
92	/*
93	 * Minimal current when high setting is active,
94	 * set in CHGCTRL4/MBCICHWRCH, uA
95	 */
96	unsigned int high_start;
97	/* Value of one step in high setting, uA */
98	unsigned int high_step;
99	/* Maximum current of high setting, uA */
100	unsigned int max;
101};
102
103extern const struct maxim_charger_current maxim_charger_currents[];
104extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
105		unsigned int min_ua, unsigned int max_ua, u8 *dst);
106
107#endif /* __MAX14577_H__ */
108