text: /* 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_BD71837 = 0,
  	ROHM_CHIP_TYPE_BD71847,
  	ROHM_CHIP_TYPE_BD70528,
  	ROHM_CHIP_TYPE_BD71828,
  	ROHM_CHIP_TYPE_BD9571,
  	ROHM_CHIP_TYPE_BD9574,
  	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_VALID_AMOUNT	4
  #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;
  };
  
  #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);
  
  #else
  static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
  						struct device_node *np,
  						const struct regulator_desc *desc,
  						struct regmap *regmap)
  {
  	return 0;
  }
  #endif
  
  #endif
  