drivers/regulator/tps65912-regulator.c

   1 /*
   2  * Regulator driver for TI TPS65912x PMICs
   3  *
   4  * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
   5  *      Andrew F. Davis <afd@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  12  * kind, whether expressed or implied; without even the implied warranty
  13  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License version 2 for more details.
  15  *
  16  * Based on the TPS65218 driver and the previous TPS65912 driver by
  17  * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/mod_devicetable.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/regulator/driver.h>
  24
  25 #include <linux/mfd/tps65912.h>
  26
  27 enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
  28         LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
  29
  30 #define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr)  \
  31         [_id] = {                                                       \
  32                 .name                   = _name,                        \
  33                 .of_match               = _of_match,                    \
  34                 .regulators_node        = "regulators",                 \
  35                 .id                     = _id,                          \
  36                 .ops                    = &_ops,                        \
  37                 .n_voltages             = 64,                           \
  38                 .type                   = REGULATOR_VOLTAGE,            \
  39                 .owner                  = THIS_MODULE,                  \
  40                 .vsel_reg               = _vr,                          \
  41                 .vsel_mask              = 0x3f,                         \
  42                 .enable_reg             = _er,                          \
  43                 .enable_mask            = BIT(7),                       \
  44                 .volt_table             = NULL,                         \
  45                 .linear_ranges          = _lr,                          \
  46                 .n_linear_ranges        = ARRAY_SIZE(_lr),              \
  47         }
  48
  49 static const struct regulator_linear_range tps65912_dcdc_ranges[] = {
  50         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
  51 };
  52
  53 static const struct regulator_linear_range tps65912_ldo_ranges[] = {
  54         REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
  55         REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
  56         REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
  57 };
  58
  59 /* Operations permitted on DCDCx */
  60 static struct regulator_ops tps65912_ops_dcdc = {
  61         .is_enabled             = regulator_is_enabled_regmap,
  62         .enable                 = regulator_enable_regmap,
  63         .disable                = regulator_disable_regmap,
  64         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  65         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  66         .list_voltage           = regulator_list_voltage_linear_range,
  67 };
  68
  69 /* Operations permitted on LDOx */
  70 static struct regulator_ops tps65912_ops_ldo = {
  71         .is_enabled             = regulator_is_enabled_regmap,
  72         .enable                 = regulator_enable_regmap,
  73         .disable                = regulator_disable_regmap,
  74         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  75         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  76         .list_voltage           = regulator_list_voltage_linear_range,
  77         .map_voltage            = regulator_map_voltage_linear_range,
  78 };
  79
  80 static const struct regulator_desc regulators[] = {
  81         TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
  82                            TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
  83                            tps65912_dcdc_ranges),
  84         TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
  85                            TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
  86                            tps65912_dcdc_ranges),
  87         TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
  88                            TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
  89                            tps65912_dcdc_ranges),
  90         TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
  91                            TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
  92                            tps65912_dcdc_ranges),
  93         TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
  94                            TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
  95                            tps65912_ldo_ranges),
  96         TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
  97                            TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
  98                            tps65912_ldo_ranges),
  99         TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
 100                            TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
 101                            tps65912_ldo_ranges),
 102         TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
 103                            TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
 104                            tps65912_ldo_ranges),
 105         TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
 106                            TPS65912_LDO5, TPS65912_LDO5,
 107                            tps65912_ldo_ranges),
 108         TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
 109                            TPS65912_LDO6, TPS65912_LDO6,
 110                            tps65912_ldo_ranges),
 111         TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
 112                            TPS65912_LDO7, TPS65912_LDO7,
 113                            tps65912_ldo_ranges),
 114         TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
 115                            TPS65912_LDO8, TPS65912_LDO8,
 116                            tps65912_ldo_ranges),
 117         TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
 118                            TPS65912_LDO9, TPS65912_LDO9,
 119                            tps65912_ldo_ranges),
 120         TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
 121                            TPS65912_LDO10, TPS65912_LDO10,
 122                            tps65912_ldo_ranges),
 123 };
 124
 125 static int tps65912_regulator_probe(struct platform_device *pdev)
 126 {
 127         struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
 128         struct regulator_config config = { };
 129         struct regulator_dev *rdev;
 130         int i;
 131
 132         platform_set_drvdata(pdev, tps);
 133
 134         config.dev = &pdev->dev;
 135         config.driver_data = tps;
 136         config.dev->of_node = tps->dev->of_node;
 137         config.regmap = tps->regmap;
 138
 139         for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 140                 rdev = devm_regulator_register(&pdev->dev, &regulators[i],
 141                                                &config);
 142                 if (IS_ERR(rdev)) {
 143                         dev_err(tps->dev, "failed to register %s regulator\n",
 144                                 pdev->name);
 145                         return PTR_ERR(rdev);
 146                 }
 147         }
 148
 149         return 0;
 150 }
 151
 152 static const struct platform_device_id tps65912_regulator_id_table[] = {
 153         { "tps65912-regulator", },
 154         { /* sentinel */ }
 155 };
 156 MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
 157
 158 static struct platform_driver tps65912_regulator_driver = {
 159         .driver = {
 160                 .name = "tps65912-regulator",
 161         },
 162         .probe = tps65912_regulator_probe,
 163         .id_table = tps65912_regulator_id_table,
 164 };
 165 module_platform_driver(tps65912_regulator_driver);
 166
 167 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
 168 MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
 169 MODULE_LICENSE("GPL v2");