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"); 169