Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | /* * Regulator driver for Ricoh RN5T618 PMIC * * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/mfd/rn5t618.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/of_regulator.h> static struct regulator_ops rn5t618_reg_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, }; #define REG(rid, ereg, emask, vreg, vmask, min, max, step) \ [RN5T618_##rid] = { \ .name = #rid, \ .id = RN5T618_##rid, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .ops = &rn5t618_reg_ops, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .min_uV = (min), \ .uV_step = (step), \ .enable_reg = RN5T618_##ereg, \ .enable_mask = (emask), \ .vsel_reg = RN5T618_##vreg, \ .vsel_mask = (vmask), \ } static struct regulator_desc rn5t618_regulators[] = { /* DCDC */ REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), /* LDO */ REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000), REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000), /* LDO RTC */ REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000), REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), }; static struct of_regulator_match rn5t618_matches[] = { [RN5T618_DCDC1] = { .name = "DCDC1" }, [RN5T618_DCDC2] = { .name = "DCDC2" }, [RN5T618_DCDC3] = { .name = "DCDC3" }, [RN5T618_LDO1] = { .name = "LDO1" }, [RN5T618_LDO2] = { .name = "LDO2" }, [RN5T618_LDO3] = { .name = "LDO3" }, [RN5T618_LDO4] = { .name = "LDO4" }, [RN5T618_LDO5] = { .name = "LDO5" }, [RN5T618_LDORTC1] = { .name = "LDORTC1" }, [RN5T618_LDORTC2] = { .name = "LDORTC2" }, }; static int rn5t618_regulator_parse_dt(struct platform_device *pdev) { struct device_node *np, *regulators; int ret; np = of_node_get(pdev->dev.parent->of_node); if (!np) return 0; regulators = of_get_child_by_name(np, "regulators"); if (!regulators) { dev_err(&pdev->dev, "regulators node not found\n"); return -EINVAL; } ret = of_regulator_match(&pdev->dev, regulators, rn5t618_matches, ARRAY_SIZE(rn5t618_matches)); of_node_put(regulators); if (ret < 0) { dev_err(&pdev->dev, "error parsing regulator init data: %d\n", ret); } return 0; } static int rn5t618_regulator_probe(struct platform_device *pdev) { struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent); struct regulator_config config = { }; struct regulator_dev *rdev; int ret, i; ret = rn5t618_regulator_parse_dt(pdev); if (ret) return ret; for (i = 0; i < RN5T618_REG_NUM; i++) { config.dev = &pdev->dev; config.init_data = rn5t618_matches[i].init_data; config.of_node = rn5t618_matches[i].of_node; config.regmap = rn5t618->regmap; rdev = devm_regulator_register(&pdev->dev, &rn5t618_regulators[i], &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s regulator\n", rn5t618_regulators[i].name); return PTR_ERR(rdev); } } return 0; } static struct platform_driver rn5t618_regulator_driver = { .probe = rn5t618_regulator_probe, .driver = { .name = "rn5t618-regulator", }, }; module_platform_driver(rn5t618_regulator_driver); MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>"); MODULE_DESCRIPTION("RN5T618 regulator driver"); MODULE_LICENSE("GPL v2"); |