1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Device driver for regulators in MAX5970 and MAX5978 IC
4 *
5 * Copyright (c) 2022 9elements GmbH
6 *
7 * Author: Patrick Rudolph <patrick.rudolph@9elements.com>
8 */
9
10#ifndef _MFD_MAX5970_H
11#define _MFD_MAX5970_H
12
13#include <linux/regmap.h>
14
15#define MAX5970_NUM_SWITCHES 2
16#define MAX5978_NUM_SWITCHES 1
17#define MAX5970_NUM_LEDS     4
18
19struct max5970_data {
20	int num_switches;
21	u32 irng[MAX5970_NUM_SWITCHES];
22	u32 mon_rng[MAX5970_NUM_SWITCHES];
23	u32 shunt_micro_ohms[MAX5970_NUM_SWITCHES];
24};
25
26enum max5970_chip_type {
27	TYPE_MAX5978 = 1,
28	TYPE_MAX5970,
29};
30
31#define MAX5970_REG_CURRENT_L(ch)		(0x01 + (ch) * 4)
32#define MAX5970_REG_CURRENT_H(ch)		(0x00 + (ch) * 4)
33#define MAX5970_REG_VOLTAGE_L(ch)		(0x03 + (ch) * 4)
34#define MAX5970_REG_VOLTAGE_H(ch)		(0x02 + (ch) * 4)
35#define MAX5970_REG_MON_RANGE			0x18
36#define  MAX5970_MON_MASK			0x3
37#define  MAX5970_MON(reg, ch)			(((reg) >> ((ch) * 2)) & MAX5970_MON_MASK)
38#define  MAX5970_MON_MAX_RANGE_UV		16000000
39
40#define MAX5970_REG_CH_UV_WARN_H(ch)		(0x1A + (ch) * 10)
41#define MAX5970_REG_CH_UV_WARN_L(ch)		(0x1B + (ch) * 10)
42#define MAX5970_REG_CH_UV_CRIT_H(ch)		(0x1C + (ch) * 10)
43#define MAX5970_REG_CH_UV_CRIT_L(ch)		(0x1D + (ch) * 10)
44#define MAX5970_REG_CH_OV_WARN_H(ch)		(0x1E + (ch) * 10)
45#define MAX5970_REG_CH_OV_WARN_L(ch)		(0x1F + (ch) * 10)
46#define MAX5970_REG_CH_OV_CRIT_H(ch)		(0x20 + (ch) * 10)
47#define MAX5970_REG_CH_OV_CRIT_L(ch)		(0x21 + (ch) * 10)
48
49#define  MAX5970_VAL2REG_H(x)		(((x) >> 2) & 0xFF)
50#define  MAX5970_VAL2REG_L(x)		((x) & 0x3)
51
52#define MAX5970_REG_DAC_FAST(ch)	(0x2E + (ch))
53
54#define MAX5970_FAST2SLOW_RATIO		200
55
56#define MAX5970_REG_STATUS0		0x31
57#define  MAX5970_CB_IFAULTF(ch)		(1 << (ch))
58#define  MAX5970_CB_IFAULTS(ch)		(1 << ((ch) + 4))
59
60#define MAX5970_REG_STATUS1		0x32
61#define  STATUS1_PROT_MASK		0x3
62#define  STATUS1_PROT(reg) \
63	(((reg) >> 6) & STATUS1_PROT_MASK)
64#define  STATUS1_PROT_SHUTDOWN		0
65#define  STATUS1_PROT_CLEAR_PG		1
66#define  STATUS1_PROT_ALERT_ONLY	2
67
68#define MAX5970_REG_STATUS2		0x33
69#define  MAX5970_IRNG_MASK		0x3
70#define  MAX5970_IRNG(reg, ch) \
71	(((reg) >> ((ch) * 2)) & MAX5970_IRNG_MASK)
72
73#define MAX5970_REG_STATUS3		0x34
74#define  MAX5970_STATUS3_ALERT		BIT(4)
75#define  MAX5970_STATUS3_PG(ch)		BIT(ch)
76
77#define MAX5970_REG_FAULT0		0x35
78#define  UV_STATUS_WARN(ch)		(1 << (ch))
79#define  UV_STATUS_CRIT(ch)		(1 << ((ch) + 4))
80
81#define MAX5970_REG_FAULT1		0x36
82#define  OV_STATUS_WARN(ch)		(1 << (ch))
83#define  OV_STATUS_CRIT(ch)		(1 << ((ch) + 4))
84
85#define MAX5970_REG_FAULT2		0x37
86#define  OC_STATUS_WARN(ch)		(1 << (ch))
87
88#define MAX5970_REG_CHXEN		0x3b
89#define  CHXEN(ch)			(3 << ((ch) * 2))
90
91#define MAX5970_REG_LED_FLASH		0x43
92
93#define MAX_REGISTERS			0x49
94#define ADC_MASK			0x3FF
95
96#endif				/* _MFD_MAX5970_H */
97