rohm-generic.h

 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_BD96801,
20	ROHM_CHIP_TYPE_BD96802,
21	ROHM_CHIP_TYPE_BD96805,
22	ROHM_CHIP_TYPE_BD96806,
23	ROHM_CHIP_TYPE_AMOUNT
24};
25
26struct rohm_regmap_dev {
27	struct device *dev;
28	struct regmap *regmap;
29};
30
31#define ROHM_DVS_LEVEL_RUN		BIT(0)
32#define ROHM_DVS_LEVEL_IDLE		BIT(1)
33#define ROHM_DVS_LEVEL_SUSPEND		BIT(2)
34#define ROHM_DVS_LEVEL_LPSR		BIT(3)
35#define ROHM_DVS_LEVEL_SNVS		BIT(4)
36#define ROHM_DVS_LEVEL_VALID_AMOUNT	5
37#define ROHM_DVS_LEVEL_UNKNOWN		0
38
39/**
40 * struct rohm_dvs_config - dynamic voltage scaling register descriptions
41 *
42 * @level_map:		bitmap representing supported run-levels for this
43 *			regulator
44 * @run_reg:		register address for regulator config at 'run' state
45 * @run_mask:		value mask for regulator voltages at 'run' state
46 * @run_on_mask:	enable mask for regulator at 'run' state
47 * @idle_reg:		register address for regulator config at 'idle' state
48 * @idle_mask:		value mask for regulator voltages at 'idle' state
49 * @idle_on_mask:	enable mask for regulator at 'idle' state
50 * @suspend_reg:	register address for regulator config at 'suspend' state
51 * @suspend_mask:	value mask for regulator voltages at 'suspend' state
52 * @suspend_on_mask:	enable mask for regulator at 'suspend' state
53 * @lpsr_reg:		register address for regulator config at 'lpsr' state
54 * @lpsr_mask:		value mask for regulator voltages at 'lpsr' state
55 * @lpsr_on_mask:	enable mask for regulator at 'lpsr' state
56 *
57 * Description of ROHM PMICs voltage configuration registers for different
58 * system states. This is used to correctly configure the PMIC at startup
59 * based on values read from DT.
60 */
61struct rohm_dvs_config {
62	uint64_t level_map;
63	unsigned int run_reg;
64	unsigned int run_mask;
65	unsigned int run_on_mask;
66	unsigned int idle_reg;
67	unsigned int idle_mask;
68	unsigned int idle_on_mask;
69	unsigned int suspend_reg;
70	unsigned int suspend_mask;
71	unsigned int suspend_on_mask;
72	unsigned int lpsr_reg;
73	unsigned int lpsr_mask;
74	unsigned int lpsr_on_mask;
75	unsigned int snvs_reg;
76	unsigned int snvs_mask;
77	unsigned int snvs_on_mask;
78};
79
80#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
81int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
82				  struct device_node *np,
83				  const struct regulator_desc *desc,
84				  struct regmap *regmap);
85
86int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev,
87					      unsigned int sel);
88#endif
89
90#endif