1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * max14577.h - Driver for the Maxim 14577/77836
4 *
5 * Copyright (C) 2014 Samsung Electrnoics
6 * Chanwoo Choi <cw00.choi@samsung.com>
7 * Krzysztof Kozlowski <krzk@kernel.org>
8 *
9 * This driver is based on max8997.h
10 *
11 * MAX14577 has MUIC, Charger devices.
12 * The devices share the same I2C bus and interrupt line
13 * included in this mfd driver.
14 *
15 * MAX77836 has additional PMIC and Fuel-Gauge on different I2C slave
16 * addresses.
17 */
18
19 #ifndef __MAX14577_H__
20 #define __MAX14577_H__
21
22 #include <linux/regulator/consumer.h>
23
24 /* MAX14577 regulator IDs */
25 enum max14577_regulators {
26 MAX14577_SAFEOUT = 0,
27 MAX14577_CHARGER,
28
29 MAX14577_REGULATOR_NUM,
30 };
31
32 /* MAX77836 regulator IDs */
33 enum max77836_regulators {
34 MAX77836_SAFEOUT = 0,
35 MAX77836_CHARGER,
36 MAX77836_LDO1,
37 MAX77836_LDO2,
38
39 MAX77836_REGULATOR_NUM,
40 };
41
42 struct max14577_regulator_platform_data {
43 int id;
44 struct regulator_init_data *initdata;
45 struct device_node *of_node;
46 };
47
48 struct max14577_charger_platform_data {
49 u32 constant_uvolt;
50 u32 fast_charge_uamp;
51 u32 eoc_uamp;
52 u32 ovp_uvolt;
53 };
54
55 /*
56 * MAX14577 MFD platform data
57 */
58 struct max14577_platform_data {
59 /* IRQ */
60 int irq_base;
61
62 /* current control GPIOs */
63 int gpio_pogo_vbatt_en;
64 int gpio_pogo_vbus_en;
65
66 /* current control GPIO control function */
67 int (*set_gpio_pogo_vbatt_en) (int gpio_val);
68 int (*set_gpio_pogo_vbus_en) (int gpio_val);
69
70 int (*set_gpio_pogo_cb) (int new_dev);
71
72 struct max14577_regulator_platform_data *regulators;
73 };
74
75 /*
76 * Valid limits of current for max14577 and max77836 chargers.
77 * They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
78 * register for given chipset.
79 */
80 struct maxim_charger_current {
81 /* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
82 unsigned int min;
83 /*
84 * Minimal current when high setting is active,
85 * set in CHGCTRL4/MBCICHWRCH, uA
86 */
87 unsigned int high_start;
88 /* Value of one step in high setting, uA */
89 unsigned int high_step;
90 /* Maximum current of high setting, uA */
91 unsigned int max;
92 };
93
94 extern const struct maxim_charger_current maxim_charger_currents[];
95 extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
96 unsigned int min_ua, unsigned int max_ua, u8 *dst);
97
98 #endif /* __MAX14577_H__ */