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