1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* Copyright (C) 2021 ROHM Semiconductors */
3
4#ifndef __LINUX_MFD_BD957X_H__
5#define __LINUX_MFD_BD957X_H__
6
7enum {
8 BD957X_VD50,
9 BD957X_VD18,
10 BD957X_VDDDR,
11 BD957X_VD10,
12 BD957X_VOUTL1,
13 BD957X_VOUTS1,
14};
15
16/*
17 * The BD9576 has own IRQ 'blocks' for:
18 * - I2C/thermal,
19 * - Over voltage protection
20 * - Short-circuit protection
21 * - Over current protection
22 * - Over voltage detection
23 * - Under voltage detection
24 * - Under voltage protection
25 * - 'system interrupt'.
26 *
27 * Each of the blocks have a status register giving more accurate IRQ source
28 * information - for example which of the regulators have over-voltage.
29 *
30 * On top of this, there is "main IRQ" status register where each bit indicates
31 * which of sub-blocks have active IRQs. Fine. That would fit regmap-irq main
32 * status handling. Except that:
33 * - Only some sub-IRQs can be masked.
34 * - The IRQ informs us about fault-condition, not when fault state changes.
35 * The IRQ line it is kept asserted until the detected condition is acked
36 * AND cleared in HW. This is annoying for IRQs like the one informing high
37 * temperature because if IRQ is not disabled it keeps the CPU in IRQ
38 * handling loop.
39 *
40 * For now we do just use the main-IRQ register as source for our IRQ
41 * information and bind the regmap-irq to this. We leave fine-grained sub-IRQ
42 * register handling to handlers in sub-devices. The regulator driver shall
43 * read which regulators are source for problem - or if the detected error is
44 * regulator temperature error. The sub-drivers do also handle masking of "sub-
45 * IRQs" if this is supported/needed.
46 *
47 * To overcome the problem with HW keeping IRQ asserted we do call
48 * disable_irq_nosync() from sub-device handler and add a delayed work to
49 * re-enable IRQ roughly 1 second later. This should keep our CPU out of
50 * busy-loop.
51 */
52#define IRQS_SILENT_MS 1000
53
54enum {
55 BD9576_INT_THERM,
56 BD9576_INT_OVP,
57 BD9576_INT_SCP,
58 BD9576_INT_OCP,
59 BD9576_INT_OVD,
60 BD9576_INT_UVD,
61 BD9576_INT_UVP,
62 BD9576_INT_SYS,
63};
64
65#define BD957X_REG_SMRB_ASSERT 0x15
66#define BD957X_REG_PMIC_INTERNAL_STAT 0x20
67#define BD957X_REG_INT_THERM_STAT 0x23
68#define BD957X_REG_INT_THERM_MASK 0x24
69#define BD957X_REG_INT_OVP_STAT 0x25
70#define BD957X_REG_INT_SCP_STAT 0x26
71#define BD957X_REG_INT_OCP_STAT 0x27
72#define BD957X_REG_INT_OVD_STAT 0x28
73#define BD957X_REG_INT_UVD_STAT 0x29
74#define BD957X_REG_INT_UVP_STAT 0x2a
75#define BD957X_REG_INT_SYS_STAT 0x2b
76#define BD957X_REG_INT_SYS_MASK 0x2c
77#define BD957X_REG_INT_MAIN_STAT 0x30
78#define BD957X_REG_INT_MAIN_MASK 0x31
79
80#define UVD_IRQ_VALID_MASK 0x6F
81#define OVD_IRQ_VALID_MASK 0x2F
82
83#define BD957X_MASK_INT_MAIN_THERM BIT(0)
84#define BD957X_MASK_INT_MAIN_OVP BIT(1)
85#define BD957X_MASK_INT_MAIN_SCP BIT(2)
86#define BD957X_MASK_INT_MAIN_OCP BIT(3)
87#define BD957X_MASK_INT_MAIN_OVD BIT(4)
88#define BD957X_MASK_INT_MAIN_UVD BIT(5)
89#define BD957X_MASK_INT_MAIN_UVP BIT(6)
90#define BD957X_MASK_INT_MAIN_SYS BIT(7)
91#define BD957X_MASK_INT_ALL 0xff
92
93#define BD957X_REG_WDT_CONF 0x16
94
95#define BD957X_REG_POW_TRIGGER1 0x41
96#define BD957X_REG_POW_TRIGGER2 0x42
97#define BD957X_REG_POW_TRIGGER3 0x43
98#define BD957X_REG_POW_TRIGGER4 0x44
99#define BD957X_REG_POW_TRIGGERL1 0x45
100#define BD957X_REG_POW_TRIGGERS1 0x46
101
102#define BD957X_REGULATOR_EN_MASK 0xff
103#define BD957X_REGULATOR_DIS_VAL 0xff
104
105#define BD957X_VSEL_REG_MASK 0xff
106
107#define BD957X_MASK_VOUT1_TUNE 0x87
108#define BD957X_MASK_VOUT2_TUNE 0x87
109#define BD957X_MASK_VOUT3_TUNE 0x1f
110#define BD957X_MASK_VOUT4_TUNE 0x1f
111#define BD957X_MASK_VOUTL1_TUNE 0x87
112
113#define BD957X_REG_VOUT1_TUNE 0x50
114#define BD957X_REG_VOUT2_TUNE 0x53
115#define BD957X_REG_VOUT3_TUNE 0x56
116#define BD957X_REG_VOUT4_TUNE 0x59
117#define BD957X_REG_VOUTL1_TUNE 0x5c
118
119#define BD9576_REG_VOUT1_OVD 0x51
120#define BD9576_REG_VOUT1_UVD 0x52
121#define BD9576_REG_VOUT2_OVD 0x54
122#define BD9576_REG_VOUT2_UVD 0x55
123#define BD9576_REG_VOUT3_OVD 0x57
124#define BD9576_REG_VOUT3_UVD 0x58
125#define BD9576_REG_VOUT4_OVD 0x5a
126#define BD9576_REG_VOUT4_UVD 0x5b
127#define BD9576_REG_VOUTL1_OVD 0x5d
128#define BD9576_REG_VOUTL1_UVD 0x5e
129
130#define BD9576_MASK_XVD 0x7f
131
132#define BD9576_REG_VOUT1S_OCW 0x5f
133#define BD9576_REG_VOUT1S_OCP 0x60
134
135#define BD9576_MASK_VOUT1S_OCW 0x3f
136#define BD9576_MASK_VOUT1S_OCP 0x3f
137
138#define BD957X_MAX_REGISTER 0x61
139
140#endif
141

source code of linux/include/linux/mfd/rohm-bd957x.h