/* * tps65218-regulator.c * * Regulator driver for TPS65218 PMIC * * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.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. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any * kind, whether expressed or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License version 2 for more details. */ #include #include #include #include #include #include #include #include #include #include #include enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 }; #define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, \ _lr, _nlr, _delay, _fuv, _sr, _sm) \ { \ .name = _name, \ .id = _id, \ .ops = &_ops, \ .n_voltages = _n, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .vsel_reg = _vr, \ .vsel_mask = _vm, \ .enable_reg = _er, \ .enable_mask = _em, \ .volt_table = NULL, \ .linear_ranges = _lr, \ .n_linear_ranges = _nlr, \ .ramp_delay = _delay, \ .fixed_uV = _fuv, \ .bypass_reg = _sr, \ .bypass_mask = _sm, \ } \ #define TPS65218_INFO(_id, _nm, _min, _max) \ [_id] = { \ .id = _id, \ .name = _nm, \ .min_uV = _min, \ .max_uV = _max, \ } static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = { REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000), REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000), }; static const struct regulator_linear_range ldo1_dcdc3_ranges[] = { REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000), REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000), }; static const struct regulator_linear_range dcdc4_ranges[] = { REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000), REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000), }; static struct tps_info tps65218_pmic_regs[] = { TPS65218_INFO(DCDC1, "DCDC1", 850000, 1675000), TPS65218_INFO(DCDC2, "DCDC2", 850000, 1675000), TPS65218_INFO(DCDC3, "DCDC3", 900000, 3400000), TPS65218_INFO(DCDC4, "DCDC4", 1175000, 3400000), TPS65218_INFO(DCDC5, "DCDC5", 1000000, 1000000), TPS65218_INFO(DCDC6, "DCDC6", 1800000, 1800000), TPS65218_INFO(LDO1, "LDO1", 900000, 3400000), }; #define TPS65218_OF_MATCH(comp, label) \ { \ .compatible = comp, \ .data = &label, \ } static const struct of_device_id tps65218_of_match[] = { TPS65218_OF_MATCH("ti,tps65218-dcdc1", tps65218_pmic_regs[DCDC1]), TPS65218_OF_MATCH("ti,tps65218-dcdc2", tps65218_pmic_regs[DCDC2]), TPS65218_OF_MATCH("ti,tps65218-dcdc3", tps65218_pmic_regs[DCDC3]), TPS65218_OF_MATCH("ti,tps65218-dcdc4", tps65218_pmic_regs[DCDC4]), TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs[DCDC5]), TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs[DCDC6]), TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs[LDO1]), { } }; MODULE_DEVICE_TABLE(of, tps65218_of_match); static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev, unsigned selector) { int ret; struct tps65218 *tps = rdev_get_drvdata(dev); unsigned int rid = rdev_get_id(dev); /* Set the voltage based on vsel value and write protect level is 2 */ ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, selector, TPS65218_PROTECT_L1); /* Set GO bit for DCDC1/2 to initiate voltage transistion */ switch (rid) { case TPS65218_DCDC_1: case TPS65218_DCDC_2: ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE, TPS65218_SLEW_RATE_GO, TPS65218_SLEW_RATE_GO, TPS65218_PROTECT_L1); break; } return ret; } static int tps65218_pmic_enable(struct regulator_dev *dev) { struct tps65218 *tps = rdev_get_drvdata(dev); int rid = rdev_get_id(dev); if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) return -EINVAL; /* Enable the regulator and password protection is level 1 */ return tps65218_set_bits(tps, dev->desc->enable_reg, dev->desc->enable_mask, dev->desc->enable_mask, TPS65218_PROTECT_L1); } static int tps65218_pmic_disable(struct regulator_dev *dev) { struct tps65218 *tps = rdev_get_drvdata(dev); int rid = rdev_get_id(dev); if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) return -EINVAL; /* Disable the regulator and password protection is level 1 */ return tps65218_clear_bits(tps, dev->desc->enable_reg, dev->desc->enable_mask, TPS65218_PROTECT_L1); } static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev) { struct tps65218 *tps = rdev_get_drvdata(dev); unsigned int rid = rdev_get_id(dev); if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) return -EINVAL; return tps65218_clear_bits(tps, dev->desc->bypass_reg, dev->desc->bypass_mask, TPS65218_PROTECT_L1); } static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev) { struct tps65218 *tps = rdev_get_drvdata(dev); unsigned int rid = rdev_get_id(dev); if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) return -EINVAL; /* * Certain revisions of TPS65218 will need to have DCDC3 regulator * enabled always, otherwise an immediate system reboot will occur * during poweroff. */ if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1) return 0; if (!tps->info[rid]->strobe) { if (rid == TPS65218_DCDC_3) tps->info[rid]->strobe = 3; else return -EINVAL; } return tps65218_set_bits(tps, dev->desc->bypass_reg, dev->desc->bypass_mask, tps->info[rid]->strobe, TPS65218_PROTECT_L1); } /* Operations permitted on DCDC1, DCDC2 */ static struct regulator_ops tps65218_dcdc12_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = tps65218_pmic_enable, .disable = tps65218_pmic_disable, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = tps65218_pmic_set_voltage_sel, .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_suspend_enable = tps65218_pmic_set_suspend_enable, .set_suspend_disable = tps65218_pmic_set_suspend_disable, }; /* Operations permitted on DCDC3, DCDC4 and LDO1 */ static struct regulator_ops tps65218_ldo1_dcdc34_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = tps65218_pmic_enable, .disable = tps65218_pmic_disable, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = tps65218_pmic_set_voltage_sel, .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .set_suspend_enable = tps65218_pmic_set_suspend_enable, .set_suspend_disable = tps65218_pmic_set_suspend_disable, }; /* Operations permitted on DCDC5, DCDC6 */ static struct regulator_ops tps65218_dcdc56_pmic_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = tps65218_pmic_enable, .disable = tps65218_pmic_disable, .set_suspend_enable = tps65218_pmic_set_suspend_enable, .set_suspend_disable = tps65218_pmic_set_suspend_disable, }; static const struct regulator_desc regulators[] = { TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, tps65218_dcdc12_ops, 64, TPS65218_REG_CONTROL_DCDC1, TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, dcdc1_dcdc2_ranges, 2, 4000, 0, TPS65218_REG_SEQ3, TPS65218_SEQ3_DC1_SEQ_MASK), TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64, TPS65218_REG_CONTROL_DCDC2, TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, dcdc1_dcdc2_ranges, 2, 4000, 0, TPS65218_REG_SEQ3, TPS65218_SEQ3_DC2_SEQ_MASK), TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops, 64, TPS65218_REG_CONTROL_DCDC3, TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC3_EN, ldo1_dcdc3_ranges, 2, 0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK), TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops, 53, TPS65218_REG_CONTROL_DCDC4, TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, dcdc4_ranges, 2, 0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK), TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops, 1, -1, -1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5, TPS65218_SEQ5_DC5_SEQ_MASK), TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops, 1, -1, -1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5, TPS65218_SEQ5_DC6_SEQ_MASK), TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64, TPS65218_REG_CONTROL_LDO1, TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LDO1_EN, ldo1_dcdc3_ranges, 2, 0, 0, TPS65218_REG_SEQ6, TPS65218_SEQ6_LDO1_SEQ_MASK), }; static int tps65218_regulator_probe(struct platform_device *pdev) { struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent); struct regulator_init_data *init_data; const struct tps_info *template; struct regulator_dev *rdev; const struct of_device_id *match; struct regulator_config config = { }; int id, ret; unsigned int val; match = of_match_device(tps65218_of_match, &pdev->dev); if (!match) return -ENODEV; template = match->data; id = template->id; init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node, ®ulators[id]); platform_set_drvdata(pdev, tps); tps->info[id] = &tps65218_pmic_regs[id]; config.dev = &pdev->dev; config.init_data = init_data; config.driver_data = tps; config.regmap = tps->regmap; config.of_node = pdev->dev.of_node; rdev = devm_regulator_register(&pdev->dev, ®ulators[id], &config); if (IS_ERR(rdev)) { dev_err(tps->dev, "failed to register %s regulator\n", pdev->name); return PTR_ERR(rdev); } ret = tps65218_reg_read(tps, regulators[id].bypass_reg, &val); if (ret) return ret; tps->info[id]->strobe = val & regulators[id].bypass_mask; return 0; } static struct platform_driver tps65218_regulator_driver = { .driver = { .name = "tps65218-pmic", .of_match_table = tps65218_of_match, }, .probe = tps65218_regulator_probe, }; module_platform_driver(tps65218_regulator_driver); MODULE_AUTHOR("J Keerthy "); MODULE_DESCRIPTION("TPS65218 voltage regulator driver"); MODULE_ALIAS("platform:tps65218-pmic"); MODULE_LICENSE("GPL v2");