Andrew F. Davis | 33f9d8c | 2016-01-25 09:43:46 -0600 | [diff] [blame^] | 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/platform_device.h> |
| 22 | #include <linux/regulator/driver.h> |
| 23 | |
| 24 | #include <linux/mfd/tps65912.h> |
| 25 | |
| 26 | enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3, |
| 27 | LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 }; |
| 28 | |
| 29 | #define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \ |
| 30 | [_id] = { \ |
| 31 | .name = _name, \ |
| 32 | .of_match = _of_match, \ |
| 33 | .regulators_node = "regulators", \ |
| 34 | .id = _id, \ |
| 35 | .ops = &_ops, \ |
| 36 | .n_voltages = 64, \ |
| 37 | .type = REGULATOR_VOLTAGE, \ |
| 38 | .owner = THIS_MODULE, \ |
| 39 | .vsel_reg = _vr, \ |
| 40 | .vsel_mask = 0x3f, \ |
| 41 | .enable_reg = _er, \ |
| 42 | .enable_mask = BIT(7), \ |
| 43 | .volt_table = NULL, \ |
| 44 | .linear_ranges = _lr, \ |
| 45 | .n_linear_ranges = ARRAY_SIZE(_lr), \ |
| 46 | } |
| 47 | |
| 48 | static const struct regulator_linear_range tps65912_dcdc_ranges[] = { |
| 49 | REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000), |
| 50 | }; |
| 51 | |
| 52 | static const struct regulator_linear_range tps65912_ldo_ranges[] = { |
| 53 | REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000), |
| 54 | REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000), |
| 55 | REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000), |
| 56 | }; |
| 57 | |
| 58 | /* Operations permitted on DCDCx */ |
| 59 | static struct regulator_ops tps65912_ops_dcdc = { |
| 60 | .is_enabled = regulator_is_enabled_regmap, |
| 61 | .enable = regulator_enable_regmap, |
| 62 | .disable = regulator_disable_regmap, |
| 63 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 64 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 65 | .list_voltage = regulator_list_voltage_linear_range, |
| 66 | }; |
| 67 | |
| 68 | /* Operations permitted on LDOx */ |
| 69 | static struct regulator_ops tps65912_ops_ldo = { |
| 70 | .is_enabled = regulator_is_enabled_regmap, |
| 71 | .enable = regulator_enable_regmap, |
| 72 | .disable = regulator_disable_regmap, |
| 73 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 74 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 75 | .list_voltage = regulator_list_voltage_linear_range, |
| 76 | .map_voltage = regulator_map_voltage_linear_range, |
| 77 | }; |
| 78 | |
| 79 | static const struct regulator_desc regulators[] = { |
| 80 | TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc, |
| 81 | TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL, |
| 82 | tps65912_dcdc_ranges), |
| 83 | TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc, |
| 84 | TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL, |
| 85 | tps65912_dcdc_ranges), |
| 86 | TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc, |
| 87 | TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL, |
| 88 | tps65912_dcdc_ranges), |
| 89 | TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc, |
| 90 | TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL, |
| 91 | tps65912_dcdc_ranges), |
| 92 | TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo, |
| 93 | TPS65912_LDO1_OP, TPS65912_LDO1_AVS, |
| 94 | tps65912_ldo_ranges), |
| 95 | TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo, |
| 96 | TPS65912_LDO2_OP, TPS65912_LDO2_AVS, |
| 97 | tps65912_ldo_ranges), |
| 98 | TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo, |
| 99 | TPS65912_LDO3_OP, TPS65912_LDO3_AVS, |
| 100 | tps65912_ldo_ranges), |
| 101 | TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo, |
| 102 | TPS65912_LDO4_OP, TPS65912_LDO4_AVS, |
| 103 | tps65912_ldo_ranges), |
| 104 | TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo, |
| 105 | TPS65912_LDO5, TPS65912_LDO5, |
| 106 | tps65912_ldo_ranges), |
| 107 | TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo, |
| 108 | TPS65912_LDO6, TPS65912_LDO6, |
| 109 | tps65912_ldo_ranges), |
| 110 | TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo, |
| 111 | TPS65912_LDO7, TPS65912_LDO7, |
| 112 | tps65912_ldo_ranges), |
| 113 | TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo, |
| 114 | TPS65912_LDO8, TPS65912_LDO8, |
| 115 | tps65912_ldo_ranges), |
| 116 | TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo, |
| 117 | TPS65912_LDO9, TPS65912_LDO9, |
| 118 | tps65912_ldo_ranges), |
| 119 | TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo, |
| 120 | TPS65912_LDO10, TPS65912_LDO10, |
| 121 | tps65912_ldo_ranges), |
| 122 | }; |
| 123 | |
| 124 | static int tps65912_regulator_probe(struct platform_device *pdev) |
| 125 | { |
| 126 | struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent); |
| 127 | struct regulator_config config = { }; |
| 128 | struct regulator_dev *rdev; |
| 129 | int i; |
| 130 | |
| 131 | platform_set_drvdata(pdev, tps); |
| 132 | |
| 133 | config.dev = &pdev->dev; |
| 134 | config.driver_data = tps; |
| 135 | config.dev->of_node = tps->dev->of_node; |
| 136 | config.regmap = tps->regmap; |
| 137 | |
| 138 | for (i = 0; i < ARRAY_SIZE(regulators); i++) { |
| 139 | rdev = devm_regulator_register(&pdev->dev, ®ulators[i], |
| 140 | &config); |
| 141 | if (IS_ERR(rdev)) { |
| 142 | dev_err(tps->dev, "failed to register %s regulator\n", |
| 143 | pdev->name); |
| 144 | return PTR_ERR(rdev); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | static const struct platform_device_id tps65912_regulator_id_table[] = { |
| 152 | { "tps65912-regulator", }, |
| 153 | { /* sentinel */ } |
| 154 | }; |
| 155 | MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table); |
| 156 | |
| 157 | static struct platform_driver tps65912_regulator_driver = { |
| 158 | .driver = { |
| 159 | .name = "tps65912-regulator", |
| 160 | }, |
| 161 | .probe = tps65912_regulator_probe, |
| 162 | .id_table = tps65912_regulator_id_table, |
| 163 | }; |
| 164 | module_platform_driver(tps65912_regulator_driver); |
| 165 | |
| 166 | MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); |
| 167 | MODULE_DESCRIPTION("TPS65912 voltage regulator driver"); |
| 168 | MODULE_LICENSE("GPL v2"); |