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 <krzk@kernel.org>
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 */
34 enum max14577_regulators {
35 	MAX14577_SAFEOUT = 0,
36 	MAX14577_CHARGER,
37 
38 	MAX14577_REGULATOR_NUM,
39 };
40 
41 /* MAX77836 regulator IDs */
42 enum max77836_regulators {
43 	MAX77836_SAFEOUT = 0,
44 	MAX77836_CHARGER,
45 	MAX77836_LDO1,
46 	MAX77836_LDO2,
47 
48 	MAX77836_REGULATOR_NUM,
49 };
50 
51 struct max14577_regulator_platform_data {
52 	int id;
53 	struct regulator_init_data *initdata;
54 	struct device_node *of_node;
55 };
56 
57 struct 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  */
67 struct 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  */
89 struct 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 
103 extern const struct maxim_charger_current maxim_charger_currents[];
104 extern 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