drivers/regulator/tps65912-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Regulator driver for TI TPS65912x PMICs
   4  *
   5  * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
   6  *      Andrew F. Davis <afd@ti.com>
   7  *
   8  * Based on the TPS65218 driver and the previous TPS65912 driver by
   9  * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/mod_devicetable.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/regulator/driver.h>
  16
  17 #include <linux/mfd/tps65912.h>
  18
  19 enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
  20         LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
  21
  22 #define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr)  \
  23         [_id] = {                                                       \
  24                 .name                   = _name,                        \
  25                 .of_match               = _of_match,                    \
  26                 .regulators_node        = "regulators",                 \
  27                 .id                     = _id,                          \
  28                 .ops                    = &_ops,                        \
  29                 .n_voltages             = 64,                           \
  30                 .type                   = REGULATOR_VOLTAGE,            \
  31                 .owner                  = THIS_MODULE,                  \
  32                 .vsel_reg               = _vr,                          \
  33                 .vsel_mask              = 0x3f,                         \
  34                 .enable_reg             = _er,                          \
  35                 .enable_mask            = BIT(7),                       \
  36                 .volt_table             = NULL,                         \
  37                 .linear_ranges          = _lr,                          \
  38                 .n_linear_ranges        = ARRAY_SIZE(_lr),              \
  39         }
  40
  41 static const struct linear_range tps65912_dcdc_ranges[] = {
  42         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
  43 };
  44
  45 static const struct linear_range tps65912_ldo_ranges[] = {
  46         REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
  47         REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
  48         REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
  49 };
  50
  51 /* Operations permitted on DCDCx */
  52 static const struct regulator_ops tps65912_ops_dcdc = {
  53         .is_enabled             = regulator_is_enabled_regmap,
  54         .enable                 = regulator_enable_regmap,
  55         .disable                = regulator_disable_regmap,
  56         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  57         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  58         .list_voltage           = regulator_list_voltage_linear_range,
  59 };
  60
  61 /* Operations permitted on LDOx */
  62 static const struct regulator_ops tps65912_ops_ldo = {
  63         .is_enabled             = regulator_is_enabled_regmap,
  64         .enable                 = regulator_enable_regmap,
  65         .disable                = regulator_disable_regmap,
  66         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  67         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  68         .list_voltage           = regulator_list_voltage_linear_range,
  69         .map_voltage            = regulator_map_voltage_linear_range,
  70 };
  71
  72 static const struct regulator_desc regulators[] = {
  73         TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
  74                            TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
  75                            tps65912_dcdc_ranges),
  76         TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
  77                            TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
  78                            tps65912_dcdc_ranges),
  79         TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
  80                            TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
  81                            tps65912_dcdc_ranges),
  82         TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
  83                            TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
  84                            tps65912_dcdc_ranges),
  85         TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
  86                            TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
  87                            tps65912_ldo_ranges),
  88         TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
  89                            TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
  90                            tps65912_ldo_ranges),
  91         TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
  92                            TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
  93                            tps65912_ldo_ranges),
  94         TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
  95                            TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
  96                            tps65912_ldo_ranges),
  97         TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
  98                            TPS65912_LDO5, TPS65912_LDO5,
  99                            tps65912_ldo_ranges),
 100         TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
 101                            TPS65912_LDO6, TPS65912_LDO6,
 102                            tps65912_ldo_ranges),
 103         TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
 104                            TPS65912_LDO7, TPS65912_LDO7,
 105                            tps65912_ldo_ranges),
 106         TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
 107                            TPS65912_LDO8, TPS65912_LDO8,
 108                            tps65912_ldo_ranges),
 109         TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
 110                            TPS65912_LDO9, TPS65912_LDO9,
 111                            tps65912_ldo_ranges),
 112         TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
 113                            TPS65912_LDO10, TPS65912_LDO10,
 114                            tps65912_ldo_ranges),
 115 };
 116
 117 static int tps65912_regulator_probe(struct platform_device *pdev)
 118 {
 119         struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
 120         struct regulator_config config = { };
 121         struct regulator_dev *rdev;
 122         int i;
 123
 124         platform_set_drvdata(pdev, tps);
 125
 126         config.dev = &pdev->dev;
 127         config.driver_data = tps;
 128         config.dev->of_node = tps->dev->of_node;
 129         config.regmap = tps->regmap;
 130
 131         for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 132                 rdev = devm_regulator_register(&pdev->dev, &regulators[i],
 133                                                &config);
 134                 if (IS_ERR(rdev)) {
 135                         dev_err(tps->dev, "failed to register %s regulator\n",
 136                                 pdev->name);
 137                         return PTR_ERR(rdev);
 138                 }
 139         }
 140
 141         return 0;
 142 }
 143
 144 static const struct platform_device_id tps65912_regulator_id_table[] = {
 145         { "tps65912-regulator", },
 146         { /* sentinel */ }
 147 };
 148 MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
 149
 150 static struct platform_driver tps65912_regulator_driver = {
 151         .driver = {
 152                 .name = "tps65912-regulator",
 153                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 154         },
 155         .probe = tps65912_regulator_probe,
 156         .id_table = tps65912_regulator_id_table,
 157 };
 158 module_platform_driver(tps65912_regulator_driver);
 159
 160 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
 161 MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
 162 MODULE_LICENSE("GPL v2");