LXR linux/drivers/regulator/internal.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * internal.h  --  Voltage/Current Regulator framework internal code
   4 *
   5 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
   6 * Copyright 2008 SlimLogic Ltd.
   7 *
   8 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
   9 */
  10
  11#ifndef __REGULATOR_INTERNAL_H
  12#define __REGULATOR_INTERNAL_H
  13
  14#include <linux/suspend.h>
  15
  16#define REGULATOR_STATES_NUM    (PM_SUSPEND_MAX + 1)
  17
  18struct regulator_voltage {
  19        int min_uV;
  20        int max_uV;
  21};
  22
  23/*
  24 * struct regulator
  25 *
  26 * One for each consumer device.
  27 * @voltage - a voltage array for each state of runtime, i.e.:
  28 *            PM_SUSPEND_ON
  29 *            PM_SUSPEND_TO_IDLE
  30 *            PM_SUSPEND_STANDBY
  31 *            PM_SUSPEND_MEM
  32 *            PM_SUSPEND_MAX
  33 */
  34struct regulator {
  35        struct device *dev;
  36        struct list_head list;
  37        unsigned int always_on:1;
  38        unsigned int bypass:1;
  39        int uA_load;
  40        unsigned int enable_count;
  41        unsigned int deferred_disables;
  42        struct regulator_voltage voltage[REGULATOR_STATES_NUM];
  43        const char *supply_name;
  44        struct device_attribute dev_attr;
  45        struct regulator_dev *rdev;
  46        struct dentry *debugfs;
  47};
  48
  49extern struct class regulator_class;
  50
  51static inline struct regulator_dev *dev_to_rdev(struct device *dev)
  52{
  53        return container_of(dev, struct regulator_dev, dev);
  54}
  55
  56#ifdef CONFIG_OF
  57struct regulator_dev *of_find_regulator_by_node(struct device_node *np);
  58struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
  59                                 const struct regulator_desc *desc,
  60                                 struct regulator_config *config,
  61                                 struct device_node **node);
  62
  63struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev,
  64                                                 int index);
  65
  66int of_get_n_coupled(struct regulator_dev *rdev);
  67
  68bool of_check_coupling_data(struct regulator_dev *rdev);
  69
  70#else
  71static inline struct regulator_dev *
  72of_find_regulator_by_node(struct device_node *np)
  73{
  74        return NULL;
  75}
  76
  77static inline struct regulator_init_data *
  78regulator_of_get_init_data(struct device *dev,
  79                           const struct regulator_desc *desc,
  80                           struct regulator_config *config,
  81                           struct device_node **node)
  82{
  83        return NULL;
  84}
  85
  86static inline struct regulator_dev *
  87of_parse_coupled_regulator(struct regulator_dev *rdev,
  88                           int index)
  89{
  90        return NULL;
  91}
  92
  93static inline int of_get_n_coupled(struct regulator_dev *rdev)
  94{
  95        return 0;
  96}
  97
  98static inline bool of_check_coupling_data(struct regulator_dev *rdev)
  99{
 100        return false;
 101}
 102
 103#endif
 104enum regulator_get_type {
 105        NORMAL_GET,
 106        EXCLUSIVE_GET,
 107        OPTIONAL_GET,
 108        MAX_GET_TYPE
 109};
 110
 111struct regulator *_regulator_get(struct device *dev, const char *id,
 112                                 enum regulator_get_type get_type);
 113#endif
 114