1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /* Copyright (C) 2018 ROHM Semiconductors */
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #ifndef __LINUX_MFD_ROHM_H__
5*4882a593Smuzhiyun #define __LINUX_MFD_ROHM_H__
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <linux/regmap.h>
8*4882a593Smuzhiyun #include <linux/regulator/driver.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun enum rohm_chip_type {
11*4882a593Smuzhiyun ROHM_CHIP_TYPE_BD71837 = 0,
12*4882a593Smuzhiyun ROHM_CHIP_TYPE_BD71847,
13*4882a593Smuzhiyun ROHM_CHIP_TYPE_BD70528,
14*4882a593Smuzhiyun ROHM_CHIP_TYPE_BD71828,
15*4882a593Smuzhiyun ROHM_CHIP_TYPE_AMOUNT
16*4882a593Smuzhiyun };
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun struct rohm_regmap_dev {
19*4882a593Smuzhiyun struct device *dev;
20*4882a593Smuzhiyun struct regmap *regmap;
21*4882a593Smuzhiyun };
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #define ROHM_DVS_LEVEL_RUN BIT(0)
24*4882a593Smuzhiyun #define ROHM_DVS_LEVEL_IDLE BIT(1)
25*4882a593Smuzhiyun #define ROHM_DVS_LEVEL_SUSPEND BIT(2)
26*4882a593Smuzhiyun #define ROHM_DVS_LEVEL_LPSR BIT(3)
27*4882a593Smuzhiyun #define ROHM_DVS_LEVEL_VALID_AMOUNT 4
28*4882a593Smuzhiyun #define ROHM_DVS_LEVEL_UNKNOWN 0
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun /**
31*4882a593Smuzhiyun * struct rohm_dvs_config - dynamic voltage scaling register descriptions
32*4882a593Smuzhiyun *
33*4882a593Smuzhiyun * @level_map: bitmap representing supported run-levels for this
34*4882a593Smuzhiyun * regulator
35*4882a593Smuzhiyun * @run_reg: register address for regulator config at 'run' state
36*4882a593Smuzhiyun * @run_mask: value mask for regulator voltages at 'run' state
37*4882a593Smuzhiyun * @run_on_mask: enable mask for regulator at 'run' state
38*4882a593Smuzhiyun * @idle_reg: register address for regulator config at 'idle' state
39*4882a593Smuzhiyun * @idle_mask: value mask for regulator voltages at 'idle' state
40*4882a593Smuzhiyun * @idle_on_mask: enable mask for regulator at 'idle' state
41*4882a593Smuzhiyun * @suspend_reg: register address for regulator config at 'suspend' state
42*4882a593Smuzhiyun * @suspend_mask: value mask for regulator voltages at 'suspend' state
43*4882a593Smuzhiyun * @suspend_on_mask: enable mask for regulator at 'suspend' state
44*4882a593Smuzhiyun * @lpsr_reg: register address for regulator config at 'lpsr' state
45*4882a593Smuzhiyun * @lpsr_mask: value mask for regulator voltages at 'lpsr' state
46*4882a593Smuzhiyun * @lpsr_on_mask: enable mask for regulator at 'lpsr' state
47*4882a593Smuzhiyun *
48*4882a593Smuzhiyun * Description of ROHM PMICs voltage configuration registers for different
49*4882a593Smuzhiyun * system states. This is used to correctly configure the PMIC at startup
50*4882a593Smuzhiyun * based on values read from DT.
51*4882a593Smuzhiyun */
52*4882a593Smuzhiyun struct rohm_dvs_config {
53*4882a593Smuzhiyun uint64_t level_map;
54*4882a593Smuzhiyun unsigned int run_reg;
55*4882a593Smuzhiyun unsigned int run_mask;
56*4882a593Smuzhiyun unsigned int run_on_mask;
57*4882a593Smuzhiyun unsigned int idle_reg;
58*4882a593Smuzhiyun unsigned int idle_mask;
59*4882a593Smuzhiyun unsigned int idle_on_mask;
60*4882a593Smuzhiyun unsigned int suspend_reg;
61*4882a593Smuzhiyun unsigned int suspend_mask;
62*4882a593Smuzhiyun unsigned int suspend_on_mask;
63*4882a593Smuzhiyun unsigned int lpsr_reg;
64*4882a593Smuzhiyun unsigned int lpsr_mask;
65*4882a593Smuzhiyun unsigned int lpsr_on_mask;
66*4882a593Smuzhiyun };
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_REGULATOR_ROHM)
69*4882a593Smuzhiyun int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
70*4882a593Smuzhiyun struct device_node *np,
71*4882a593Smuzhiyun const struct regulator_desc *desc,
72*4882a593Smuzhiyun struct regmap *regmap);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun #else
rohm_regulator_set_dvs_levels(const struct rohm_dvs_config * dvs,struct device_node * np,const struct regulator_desc * desc,struct regmap * regmap)75*4882a593Smuzhiyun static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
76*4882a593Smuzhiyun struct device_node *np,
77*4882a593Smuzhiyun const struct regulator_desc *desc,
78*4882a593Smuzhiyun struct regmap *regmap)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun return 0;
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun #endif
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun #endif
85