1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* Copyright (C) 2018 ROHM Semiconductors */
3
4#ifndef __LINUX_MFD_ROHM_H__
5#define __LINUX_MFD_ROHM_H__
6
7#include <linux/regmap.h>
8#include <linux/regulator/driver.h>
9
10enum rohm_chip_type {
11	ROHM_CHIP_TYPE_BD9571,
12	ROHM_CHIP_TYPE_BD9573,
13	ROHM_CHIP_TYPE_BD9574,
14	ROHM_CHIP_TYPE_BD9576,
15	ROHM_CHIP_TYPE_BD71815,
16	ROHM_CHIP_TYPE_BD71828,
17	ROHM_CHIP_TYPE_BD71837,
18	ROHM_CHIP_TYPE_BD71847,
19	ROHM_CHIP_TYPE_AMOUNT
20};
21
22struct rohm_regmap_dev {
23	struct device *dev;
24	struct regmap *regmap;
25};
26
27#define ROHM_DVS_LEVEL_RUN		BIT(0)
28#define ROHM_DVS_LEVEL_IDLE		BIT(1)
29#define ROHM_DVS_LEVEL_SUSPEND		BIT(2)
30#define ROHM_DVS_LEVEL_LPSR		BIT(3)
31#define ROHM_DVS_LEVEL_SNVS		BIT(4)
32#define ROHM_DVS_LEVEL_VALID_AMOUNT	5
33#define ROHM_DVS_LEVEL_UNKNOWN		0
34
35/**
36 * struct rohm_dvs_config - dynamic voltage scaling register descriptions
37 *
38 * @level_map:		bitmap representing supported run-levels for this
39 *			regulator
40 * @run_reg:		register address for regulator config at 'run' state
41 * @run_mask:		value mask for regulator voltages at 'run' state
42 * @run_on_mask:	enable mask for regulator at 'run' state
43 * @idle_reg:		register address for regulator config at 'idle' state
44 * @idle_mask:		value mask for regulator voltages at 'idle' state
45 * @idle_on_mask:	enable mask for regulator at 'idle' state
46 * @suspend_reg:	register address for regulator config at 'suspend' state
47 * @suspend_mask:	value mask for regulator voltages at 'suspend' state
48 * @suspend_on_mask:	enable mask for regulator at 'suspend' state
49 * @lpsr_reg:		register address for regulator config at 'lpsr' state
50 * @lpsr_mask:		value mask for regulator voltages at 'lpsr' state
51 * @lpsr_on_mask:	enable mask for regulator at 'lpsr' state
52 *
53 * Description of ROHM PMICs voltage configuration registers for different
54 * system states. This is used to correctly configure the PMIC at startup
55 * based on values read from DT.
56 */
57struct rohm_dvs_config {
58	uint64_t level_map;
59	unsigned int run_reg;
60	unsigned int run_mask;
61	unsigned int run_on_mask;
62	unsigned int idle_reg;
63	unsigned int idle_mask;
64	unsigned int idle_on_mask;
65	unsigned int suspend_reg;
66	unsigned int suspend_mask;
67	unsigned int suspend_on_mask;
68	unsigned int lpsr_reg;
69	unsigned int lpsr_mask;
70	unsigned int lpsr_on_mask;
71	unsigned int snvs_reg;
72	unsigned int snvs_mask;
73	unsigned int snvs_on_mask;
74};
75
76#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
77int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
78				  struct device_node *np,
79				  const struct regulator_desc *desc,
80				  struct regmap *regmap);
81
82int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev,
83					      unsigned int sel);
84#endif
85
86#endif
87