1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Regulator driver for Ricoh RN5T618 PMIC 4 * 5 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com> 6 */ 7 8 #include <linux/mfd/rn5t618.h> 9 #include <linux/module.h> 10 #include <linux/of.h> 11 #include <linux/platform_device.h> 12 #include <linux/regmap.h> 13 #include <linux/regulator/driver.h> 14 #include <linux/regulator/of_regulator.h> 15 16 static const struct regulator_ops rn5t618_reg_ops = { 17 .enable = regulator_enable_regmap, 18 .disable = regulator_disable_regmap, 19 .is_enabled = regulator_is_enabled_regmap, 20 .set_voltage_sel = regulator_set_voltage_sel_regmap, 21 .get_voltage_sel = regulator_get_voltage_sel_regmap, 22 .list_voltage = regulator_list_voltage_linear, 23 }; 24 25 #define REG(rid, ereg, emask, vreg, vmask, min, max, step) \ 26 { \ 27 .name = #rid, \ 28 .of_match = of_match_ptr(#rid), \ 29 .regulators_node = of_match_ptr("regulators"), \ 30 .id = RN5T618_##rid, \ 31 .type = REGULATOR_VOLTAGE, \ 32 .owner = THIS_MODULE, \ 33 .ops = &rn5t618_reg_ops, \ 34 .n_voltages = ((max) - (min)) / (step) + 1, \ 35 .min_uV = (min), \ 36 .uV_step = (step), \ 37 .enable_reg = RN5T618_##ereg, \ 38 .enable_mask = (emask), \ 39 .vsel_reg = RN5T618_##vreg, \ 40 .vsel_mask = (vmask), \ 41 } 42 43 static const struct regulator_desc rn5t567_regulators[] = { 44 /* DCDC */ 45 REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), 46 REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), 47 REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), 48 REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500), 49 /* LDO */ 50 REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), 51 REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), 52 REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000), 53 REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), 54 REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000), 55 /* LDO RTC */ 56 REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000), 57 REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), 58 }; 59 60 static const struct regulator_desc rn5t618_regulators[] = { 61 /* DCDC */ 62 REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), 63 REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), 64 REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), 65 /* LDO */ 66 REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), 67 REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), 68 REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000), 69 REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), 70 REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000), 71 /* LDO RTC */ 72 REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000), 73 REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), 74 }; 75 76 static const struct regulator_desc rc5t619_regulators[] = { 77 /* DCDC */ 78 REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), 79 REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), 80 REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), 81 REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500), 82 REG(DCDC5, DC5CTL, BIT(0), DC5DAC, 0xff, 600000, 3500000, 12500), 83 /* LDO */ 84 REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), 85 REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), 86 REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 900000, 3500000, 25000), 87 REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), 88 REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 600000, 3500000, 25000), 89 REG(LDO6, LDOEN1, BIT(5), LDO6DAC, 0x7f, 600000, 3500000, 25000), 90 REG(LDO7, LDOEN1, BIT(6), LDO7DAC, 0x7f, 900000, 3500000, 25000), 91 REG(LDO8, LDOEN1, BIT(7), LDO8DAC, 0x7f, 900000, 3500000, 25000), 92 REG(LDO9, LDOEN2, BIT(0), LDO9DAC, 0x7f, 900000, 3500000, 25000), 93 REG(LDO10, LDOEN2, BIT(1), LDO10DAC, 0x7f, 900000, 3500000, 25000), 94 /* LDO RTC */ 95 REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000), 96 REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), 97 }; 98 99 static int rn5t618_regulator_probe(struct platform_device *pdev) 100 { 101 struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent); 102 struct regulator_config config = { }; 103 struct regulator_dev *rdev; 104 const struct regulator_desc *regulators; 105 int i; 106 int num_regulators = 0; 107 108 switch (rn5t618->variant) { 109 case RN5T567: 110 regulators = rn5t567_regulators; 111 num_regulators = ARRAY_SIZE(rn5t567_regulators); 112 break; 113 case RN5T618: 114 regulators = rn5t618_regulators; 115 num_regulators = ARRAY_SIZE(rn5t618_regulators); 116 break; 117 case RC5T619: 118 regulators = rc5t619_regulators; 119 num_regulators = ARRAY_SIZE(rc5t619_regulators); 120 break; 121 default: 122 return -EINVAL; 123 } 124 125 config.dev = pdev->dev.parent; 126 config.regmap = rn5t618->regmap; 127 128 for (i = 0; i < num_regulators; i++) { 129 rdev = devm_regulator_register(&pdev->dev, 130 ®ulators[i], 131 &config); 132 if (IS_ERR(rdev)) { 133 dev_err(&pdev->dev, "failed to register %s regulator\n", 134 regulators[i].name); 135 return PTR_ERR(rdev); 136 } 137 } 138 139 return 0; 140 } 141 142 static struct platform_driver rn5t618_regulator_driver = { 143 .probe = rn5t618_regulator_probe, 144 .driver = { 145 .name = "rn5t618-regulator", 146 }, 147 }; 148 149 module_platform_driver(rn5t618_regulator_driver); 150 151 MODULE_ALIAS("platform:rn5t618-regulator"); 152 MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>"); 153 MODULE_DESCRIPTION("RN5T618 regulator driver"); 154 MODULE_LICENSE("GPL v2"); 155