LXR linux/include/linux/mfd/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_BD71837 = 0,
  12        ROHM_CHIP_TYPE_BD71847,
  13        ROHM_CHIP_TYPE_BD70528,
  14        ROHM_CHIP_TYPE_BD71828,
  15        ROHM_CHIP_TYPE_AMOUNT
  16};
  17
  18struct rohm_regmap_dev {
  19        struct device *dev;
  20        struct regmap *regmap;
  21};
  22
  23enum {
  24        ROHM_DVS_LEVEL_UNKNOWN,
  25        ROHM_DVS_LEVEL_RUN,
  26        ROHM_DVS_LEVEL_IDLE,
  27        ROHM_DVS_LEVEL_SUSPEND,
  28        ROHM_DVS_LEVEL_LPSR,
  29        ROHM_DVS_LEVEL_MAX = ROHM_DVS_LEVEL_LPSR,
  30};
  31
  32/**
  33 * struct rohm_dvs_config - dynamic voltage scaling register descriptions
  34 *
  35 * @level_map:          bitmap representing supported run-levels for this
  36 *                      regulator
  37 * @run_reg:            register address for regulator config at 'run' state
  38 * @run_mask:           value mask for regulator voltages at 'run' state
  39 * @run_on_mask:        enable mask for regulator at 'run' state
  40 * @idle_reg:           register address for regulator config at 'idle' state
  41 * @idle_mask:          value mask for regulator voltages at 'idle' state
  42 * @idle_on_mask:       enable mask for regulator at 'idle' state
  43 * @suspend_reg:        register address for regulator config at 'suspend' state
  44 * @suspend_mask:       value mask for regulator voltages at 'suspend' state
  45 * @suspend_on_mask:    enable mask for regulator at 'suspend' state
  46 * @lpsr_reg:           register address for regulator config at 'lpsr' state
  47 * @lpsr_mask:          value mask for regulator voltages at 'lpsr' state
  48 * @lpsr_on_mask:       enable mask for regulator at 'lpsr' state
  49 *
  50 * Description of ROHM PMICs voltage configuration registers for different
  51 * system states. This is used to correctly configure the PMIC at startup
  52 * based on values read from DT.
  53 */
  54struct rohm_dvs_config {
  55        uint64_t level_map;
  56        unsigned int run_reg;
  57        unsigned int run_mask;
  58        unsigned int run_on_mask;
  59        unsigned int idle_reg;
  60        unsigned int idle_mask;
  61        unsigned int idle_on_mask;
  62        unsigned int suspend_reg;
  63        unsigned int suspend_mask;
  64        unsigned int suspend_on_mask;
  65        unsigned int lpsr_reg;
  66        unsigned int lpsr_mask;
  67        unsigned int lpsr_on_mask;
  68};
  69
  70#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
  71int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
  72                                  struct device_node *np,
  73                                  const struct regulator_desc *desc,
  74                                  struct regmap *regmap);
  75
  76#else
  77static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
  78                                                struct device_node *np,
  79                                                const struct regulator_desc *desc,
  80                                                struct regmap *regmap)
  81{
  82        return 0;
  83}
  84#endif
  85
  86#endif
  87