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, ®ulators[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"); 170