drivers/regulator/rn5t618-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Regulator driver for Ricoh RN5T618 PMIC
   4  *
   5  * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
   6  */
   7
   8 #include <linux/mfd/rn5t618.h>
   9 #include <linux/module.h>
  10 #include <linux/of.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/regmap.h>
  13 #include <linux/regulator/driver.h>
  14 #include <linux/regulator/of_regulator.h>
  15
  16 static const struct regulator_ops rn5t618_reg_ops = {
  17         .enable                 = regulator_enable_regmap,
  18         .disable                = regulator_disable_regmap,
  19         .is_enabled             = regulator_is_enabled_regmap,
  20         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  21         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  22         .list_voltage           = regulator_list_voltage_linear,
  23 };
  24
  25 #define REG(rid, ereg, emask, vreg, vmask, min, max, step)              \
  26         {                                                               \
  27                 .name           = #rid,                                 \
  28                 .of_match       = of_match_ptr(#rid),                   \
  29                 .regulators_node = of_match_ptr("regulators"),          \
  30                 .id             = RN5T618_##rid,                        \
  31                 .type           = REGULATOR_VOLTAGE,                    \
  32                 .owner          = THIS_MODULE,                          \
  33                 .ops            = &rn5t618_reg_ops,                     \
  34                 .n_voltages     = ((max) - (min)) / (step) + 1,         \
  35                 .min_uV         = (min),                                \
  36                 .uV_step        = (step),                               \
  37                 .enable_reg     = RN5T618_##ereg,                       \
  38                 .enable_mask    = (emask),                              \
  39                 .vsel_reg       = RN5T618_##vreg,                       \
  40                 .vsel_mask      = (vmask),                              \
  41         }
  42
  43 static const struct regulator_desc rn5t567_regulators[] = {
  44         /* DCDC */
  45         REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
  46         REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
  47         REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
  48         REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
  49         /* LDO */
  50         REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
  51         REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
  52         REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
  53         REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
  54         REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
  55         /* LDO RTC */
  56         REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000),
  57         REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
  58 };
  59
  60 static const struct regulator_desc rn5t618_regulators[] = {
  61         /* DCDC */
  62         REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
  63         REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
  64         REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
  65         /* LDO */
  66         REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
  67         REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
  68         REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
  69         REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
  70         REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
  71         /* LDO RTC */
  72         REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
  73         REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
  74 };
  75
  76 static const struct regulator_desc rc5t619_regulators[] = {
  77         /* DCDC */
  78         REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
  79         REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
  80         REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
  81         REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
  82         REG(DCDC5, DC5CTL, BIT(0), DC5DAC, 0xff, 600000, 3500000, 12500),
  83         /* LDO */
  84         REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
  85         REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
  86         REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 900000, 3500000, 25000),
  87         REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
  88         REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 600000, 3500000, 25000),
  89         REG(LDO6, LDOEN1, BIT(5), LDO6DAC, 0x7f, 600000, 3500000, 25000),
  90         REG(LDO7, LDOEN1, BIT(6), LDO7DAC, 0x7f, 900000, 3500000, 25000),
  91         REG(LDO8, LDOEN1, BIT(7), LDO8DAC, 0x7f, 900000, 3500000, 25000),
  92         REG(LDO9, LDOEN2, BIT(0), LDO9DAC, 0x7f, 900000, 3500000, 25000),
  93         REG(LDO10, LDOEN2, BIT(1), LDO10DAC, 0x7f, 900000, 3500000, 25000),
  94         /* LDO RTC */
  95         REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
  96         REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
  97 };
  98
  99 static int rn5t618_regulator_probe(struct platform_device *pdev)
 100 {
 101         struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
 102         struct regulator_config config = { };
 103         struct regulator_dev *rdev;
 104         const struct regulator_desc *regulators;
 105         int i;
 106         int num_regulators = 0;
 107
 108         switch (rn5t618->variant) {
 109         case RN5T567:
 110                 regulators = rn5t567_regulators;
 111                 num_regulators = ARRAY_SIZE(rn5t567_regulators);
 112                 break;
 113         case RN5T618:
 114                 regulators = rn5t618_regulators;
 115                 num_regulators = ARRAY_SIZE(rn5t618_regulators);
 116                 break;
 117         case RC5T619:
 118                 regulators = rc5t619_regulators;
 119                 num_regulators = ARRAY_SIZE(rc5t619_regulators);
 120                 break;
 121         default:
 122                 return -EINVAL;
 123         }
 124
 125         config.dev = pdev->dev.parent;
 126         config.regmap = rn5t618->regmap;
 127
 128         for (i = 0; i < num_regulators; i++) {
 129                 rdev = devm_regulator_register(&pdev->dev,
 130                                                &regulators[i],
 131                                                &config);
 132                 if (IS_ERR(rdev)) {
 133                         dev_err(&pdev->dev, "failed to register %s regulator\n",
 134                                 regulators[i].name);
 135                         return PTR_ERR(rdev);
 136                 }
 137         }
 138
 139         return 0;
 140 }
 141
 142 static struct platform_driver rn5t618_regulator_driver = {
 143         .probe = rn5t618_regulator_probe,
 144         .driver = {
 145                 .name   = "rn5t618-regulator",
 146                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 147         },
 148 };
 149
 150 module_platform_driver(rn5t618_regulator_driver);
 151
 152 MODULE_ALIAS("platform:rn5t618-regulator");
 153 MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
 154 MODULE_DESCRIPTION("RN5T618 regulator driver");
 155 MODULE_LICENSE("GPL v2");