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

source code of linux/include/linux/mfd/max5970.h