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
  10 enum 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
  18 struct rohm_regmap_dev {
  19         struct device *dev;
  20         struct regmap *regmap;
  21 };
  22
  23 enum {
  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  */
  54 struct 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)
  71 int 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
  77 static 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