1 /* 2 * tps65217-regulator.c 3 * 4 * Regulator driver for TPS65217 PMIC 5 * 6 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation version 2. 11 * 12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 13 * kind, whether express or implied; without even the implied warranty 14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 18 #include <linux/kernel.h> 19 #include <linux/module.h> 20 #include <linux/device.h> 21 #include <linux/init.h> 22 #include <linux/err.h> 23 #include <linux/platform_device.h> 24 25 #include <linux/regulator/of_regulator.h> 26 #include <linux/regulator/driver.h> 27 #include <linux/regulator/machine.h> 28 #include <linux/mfd/tps65217.h> 29 30 #define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \ 31 _t, _lr, _nlr) \ 32 { \ 33 .name = _name, \ 34 .id = _id, \ 35 .of_match = of_match_ptr(_of_match), \ 36 .regulators_node= of_match_ptr("regulators"), \ 37 .ops = &_ops, \ 38 .n_voltages = _n, \ 39 .type = REGULATOR_VOLTAGE, \ 40 .owner = THIS_MODULE, \ 41 .vsel_reg = _vr, \ 42 .vsel_mask = _vm, \ 43 .enable_reg = TPS65217_REG_ENABLE, \ 44 .enable_mask = _em, \ 45 .volt_table = _t, \ 46 .linear_ranges = _lr, \ 47 .n_linear_ranges = _nlr, \ 48 } \ 49 50 static const unsigned int LDO1_VSEL_table[] = { 51 1000000, 1100000, 1200000, 1250000, 52 1300000, 1350000, 1400000, 1500000, 53 1600000, 1800000, 2500000, 2750000, 54 2800000, 3000000, 3100000, 3300000, 55 }; 56 57 static const struct regulator_linear_range tps65217_uv1_ranges[] = { 58 REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000), 59 REGULATOR_LINEAR_RANGE(1550000, 25, 30, 50000), 60 REGULATOR_LINEAR_RANGE(1850000, 31, 52, 50000), 61 REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000), 62 REGULATOR_LINEAR_RANGE(3300000, 56, 62, 0), 63 }; 64 65 static const struct regulator_linear_range tps65217_uv2_ranges[] = { 66 REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000), 67 REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000), 68 REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000), 69 }; 70 71 static int tps65217_pmic_enable(struct regulator_dev *dev) 72 { 73 struct tps65217 *tps = rdev_get_drvdata(dev); 74 int rid = rdev_get_id(dev); 75 76 if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) 77 return -EINVAL; 78 79 /* Enable the regulator and password protection is level 1 */ 80 return tps65217_set_bits(tps, TPS65217_REG_ENABLE, 81 dev->desc->enable_mask, dev->desc->enable_mask, 82 TPS65217_PROTECT_L1); 83 } 84 85 static int tps65217_pmic_disable(struct regulator_dev *dev) 86 { 87 struct tps65217 *tps = rdev_get_drvdata(dev); 88 int rid = rdev_get_id(dev); 89 90 if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) 91 return -EINVAL; 92 93 /* Disable the regulator and password protection is level 1 */ 94 return tps65217_clear_bits(tps, TPS65217_REG_ENABLE, 95 dev->desc->enable_mask, TPS65217_PROTECT_L1); 96 } 97 98 static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev, 99 unsigned selector) 100 { 101 int ret; 102 struct tps65217 *tps = rdev_get_drvdata(dev); 103 unsigned int rid = rdev_get_id(dev); 104 105 /* Set the voltage based on vsel value and write protect level is 2 */ 106 ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, 107 selector, TPS65217_PROTECT_L2); 108 109 /* Set GO bit for DCDCx to initiate voltage transistion */ 110 switch (rid) { 111 case TPS65217_DCDC_1 ... TPS65217_DCDC_3: 112 ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW, 113 TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO, 114 TPS65217_PROTECT_L2); 115 break; 116 } 117 118 return ret; 119 } 120 121 /* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */ 122 static struct regulator_ops tps65217_pmic_ops = { 123 .is_enabled = regulator_is_enabled_regmap, 124 .enable = tps65217_pmic_enable, 125 .disable = tps65217_pmic_disable, 126 .get_voltage_sel = regulator_get_voltage_sel_regmap, 127 .set_voltage_sel = tps65217_pmic_set_voltage_sel, 128 .list_voltage = regulator_list_voltage_linear_range, 129 .map_voltage = regulator_map_voltage_linear_range, 130 }; 131 132 /* Operations permitted on LDO1 */ 133 static struct regulator_ops tps65217_pmic_ldo1_ops = { 134 .is_enabled = regulator_is_enabled_regmap, 135 .enable = tps65217_pmic_enable, 136 .disable = tps65217_pmic_disable, 137 .get_voltage_sel = regulator_get_voltage_sel_regmap, 138 .set_voltage_sel = tps65217_pmic_set_voltage_sel, 139 .list_voltage = regulator_list_voltage_table, 140 .map_voltage = regulator_map_voltage_ascend, 141 }; 142 143 static const struct regulator_desc regulators[] = { 144 TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1", 145 tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1, 146 TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN, 147 NULL, tps65217_uv1_ranges, 2), 148 TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2", 149 tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2, 150 TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN, 151 NULL, tps65217_uv1_ranges, 152 ARRAY_SIZE(tps65217_uv1_ranges)), 153 TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3", 154 tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3, 155 TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN, 156 NULL, tps65217_uv1_ranges, 1), 157 TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1", 158 tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1, 159 TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN, 160 LDO1_VSEL_table, NULL, 0), 161 TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops, 162 64, TPS65217_REG_DEFLDO2, 163 TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN, 164 NULL, tps65217_uv1_ranges, 165 ARRAY_SIZE(tps65217_uv1_ranges)), 166 TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops, 167 32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK, 168 TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN, 169 NULL, tps65217_uv2_ranges, 170 ARRAY_SIZE(tps65217_uv2_ranges)), 171 TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops, 172 32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK, 173 TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN, 174 NULL, tps65217_uv2_ranges, 175 ARRAY_SIZE(tps65217_uv2_ranges)), 176 }; 177 178 static int tps65217_regulator_probe(struct platform_device *pdev) 179 { 180 struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent); 181 struct tps65217_board *pdata = dev_get_platdata(tps->dev); 182 struct regulator_dev *rdev; 183 struct regulator_config config = { }; 184 int i; 185 186 if (tps65217_chip_id(tps) != TPS65217) { 187 dev_err(&pdev->dev, "Invalid tps chip version\n"); 188 return -ENODEV; 189 } 190 191 platform_set_drvdata(pdev, tps); 192 193 for (i = 0; i < TPS65217_NUM_REGULATOR; i++) { 194 /* Register the regulators */ 195 config.dev = tps->dev; 196 if (pdata) 197 config.init_data = pdata->tps65217_init_data[i]; 198 config.driver_data = tps; 199 config.regmap = tps->regmap; 200 201 rdev = devm_regulator_register(&pdev->dev, ®ulators[i], 202 &config); 203 if (IS_ERR(rdev)) { 204 dev_err(tps->dev, "failed to register %s regulator\n", 205 pdev->name); 206 return PTR_ERR(rdev); 207 } 208 } 209 210 return 0; 211 } 212 213 static struct platform_driver tps65217_regulator_driver = { 214 .driver = { 215 .name = "tps65217-pmic", 216 }, 217 .probe = tps65217_regulator_probe, 218 }; 219 220 static int __init tps65217_regulator_init(void) 221 { 222 return platform_driver_register(&tps65217_regulator_driver); 223 } 224 subsys_initcall(tps65217_regulator_init); 225 226 static void __exit tps65217_regulator_exit(void) 227 { 228 platform_driver_unregister(&tps65217_regulator_driver); 229 } 230 module_exit(tps65217_regulator_exit); 231 232 MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>"); 233 MODULE_DESCRIPTION("TPS65217 voltage regulator driver"); 234 MODULE_ALIAS("platform:tps65217-pmic"); 235 MODULE_LICENSE("GPL v2"); 236