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 | |
19 | struct 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 | |
26 | enum 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 | |