| /* |
| * 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 <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/device.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/of_device.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/mfd/tps65218.h> |
| |
| 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) \ |
| { \ |
| .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 \ |
| } \ |
| |
| #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); |
| } |
| |
| /* 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, |
| }; |
| |
| /* 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, |
| }; |
| |
| /* 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, |
| }; |
| |
| 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_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_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_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_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops, |
| 1, -1, -1, TPS65218_REG_ENABLE1, |
| TPS65218_ENABLE1_DC5_EN, NULL, 0, 0, 1000000), |
| 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_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), |
| }; |
| |
| 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; |
| |
| 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); |
| } |
| |
| 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 <j-keerthy@ti.com>"); |
| MODULE_DESCRIPTION("TPS65218 voltage regulator driver"); |
| MODULE_ALIAS("platform:tps65218-pmic"); |
| MODULE_LICENSE("GPL v2"); |