/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Copyright (C) 2018 ROHM Semiconductors */

#ifndef __LINUX_MFD_ROHM_H__
#define __LINUX_MFD_ROHM_H__

#include <linux/regmap.h>
#include <linux/regulator/driver.h>

enum rohm_chip_type {
        ROHM_CHIP_TYPE_BD9571,
        ROHM_CHIP_TYPE_BD9573,
        ROHM_CHIP_TYPE_BD9574,
        ROHM_CHIP_TYPE_BD9576,
        ROHM_CHIP_TYPE_BD71815,
        ROHM_CHIP_TYPE_BD71828,
        ROHM_CHIP_TYPE_BD71837,
        ROHM_CHIP_TYPE_BD71847,
        ROHM_CHIP_TYPE_BD72720,
        ROHM_CHIP_TYPE_BD96801,
        ROHM_CHIP_TYPE_BD96802,
        ROHM_CHIP_TYPE_BD96805,
        ROHM_CHIP_TYPE_BD96806,
        ROHM_CHIP_TYPE_AMOUNT
};

struct rohm_regmap_dev {
        struct device *dev;
        struct regmap *regmap;
};

#define ROHM_DVS_LEVEL_RUN              BIT(0)
#define ROHM_DVS_LEVEL_IDLE             BIT(1)
#define ROHM_DVS_LEVEL_SUSPEND          BIT(2)
#define ROHM_DVS_LEVEL_LPSR             BIT(3)
#define ROHM_DVS_LEVEL_SNVS             BIT(4)
#define ROHM_DVS_LEVEL_VALID_AMOUNT     5
#define ROHM_DVS_LEVEL_UNKNOWN          0

/**
 * struct rohm_dvs_config - dynamic voltage scaling register descriptions
 *
 * @level_map:          bitmap representing supported run-levels for this
 *                      regulator
 * @run_reg:            register address for regulator config at 'run' state
 * @run_mask:           value mask for regulator voltages at 'run' state
 * @run_on_mask:        enable mask for regulator at 'run' state
 * @idle_reg:           register address for regulator config at 'idle' state
 * @idle_mask:          value mask for regulator voltages at 'idle' state
 * @idle_on_mask:       enable mask for regulator at 'idle' state
 * @suspend_reg:        register address for regulator config at 'suspend' state
 * @suspend_mask:       value mask for regulator voltages at 'suspend' state
 * @suspend_on_mask:    enable mask for regulator at 'suspend' state
 * @lpsr_reg:           register address for regulator config at 'lpsr' state
 * @lpsr_mask:          value mask for regulator voltages at 'lpsr' state
 * @lpsr_on_mask:       enable mask for regulator at 'lpsr' state
 *
 * Description of ROHM PMICs voltage configuration registers for different
 * system states. This is used to correctly configure the PMIC at startup
 * based on values read from DT.
 */
struct rohm_dvs_config {
        uint64_t level_map;
        unsigned int run_reg;
        unsigned int run_mask;
        unsigned int run_on_mask;
        unsigned int idle_reg;
        unsigned int idle_mask;
        unsigned int idle_on_mask;
        unsigned int suspend_reg;
        unsigned int suspend_mask;
        unsigned int suspend_on_mask;
        unsigned int lpsr_reg;
        unsigned int lpsr_mask;
        unsigned int lpsr_on_mask;
        unsigned int snvs_reg;
        unsigned int snvs_mask;
        unsigned int snvs_on_mask;
};

#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
                                  struct device_node *np,
                                  const struct regulator_desc *desc,
                                  struct regmap *regmap);

int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev,
                                              unsigned int sel);
#endif

#endif