1a493077fSAnilKumar Ch /* 2a493077fSAnilKumar Ch * tps65217-regulator.c 3a493077fSAnilKumar Ch * 4a493077fSAnilKumar Ch * Regulator driver for TPS65217 PMIC 5a493077fSAnilKumar Ch * 62ca76b3eSAlexander A. Klimov * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/ 7a493077fSAnilKumar Ch * 8a493077fSAnilKumar Ch * This program is free software; you can redistribute it and/or 9a493077fSAnilKumar Ch * modify it under the terms of the GNU General Public License as 10a493077fSAnilKumar Ch * published by the Free Software Foundation version 2. 11a493077fSAnilKumar Ch * 12a493077fSAnilKumar Ch * This program is distributed "as is" WITHOUT ANY WARRANTY of any 13a493077fSAnilKumar Ch * kind, whether express or implied; without even the implied warranty 14a493077fSAnilKumar Ch * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15a493077fSAnilKumar Ch * GNU General Public License for more details. 16a493077fSAnilKumar Ch */ 17a493077fSAnilKumar Ch 18a493077fSAnilKumar Ch #include <linux/kernel.h> 19a493077fSAnilKumar Ch #include <linux/module.h> 20a493077fSAnilKumar Ch #include <linux/device.h> 21a493077fSAnilKumar Ch #include <linux/init.h> 22a493077fSAnilKumar Ch #include <linux/err.h> 23a493077fSAnilKumar Ch #include <linux/platform_device.h> 24a493077fSAnilKumar Ch 251922b0f2SAnilKumar Ch #include <linux/regulator/of_regulator.h> 26a493077fSAnilKumar Ch #include <linux/regulator/driver.h> 27a493077fSAnilKumar Ch #include <linux/regulator/machine.h> 28a493077fSAnilKumar Ch #include <linux/mfd/tps65217.h> 29a493077fSAnilKumar Ch 307d42a7f2SMark Brown #define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \ 313de56099SRuss Dill _t, _lr, _nlr, _sr, _sm) \ 32a493077fSAnilKumar Ch { \ 33a493077fSAnilKumar Ch .name = _name, \ 34a493077fSAnilKumar Ch .id = _id, \ 357d42a7f2SMark Brown .of_match = of_match_ptr(_of_match), \ 367d42a7f2SMark Brown .regulators_node= of_match_ptr("regulators"), \ 37a493077fSAnilKumar Ch .ops = &_ops, \ 38a493077fSAnilKumar Ch .n_voltages = _n, \ 39a493077fSAnilKumar Ch .type = REGULATOR_VOLTAGE, \ 40a493077fSAnilKumar Ch .owner = THIS_MODULE, \ 41b4bc9ef6SAxel Lin .vsel_reg = _vr, \ 42b4bc9ef6SAxel Lin .vsel_mask = _vm, \ 43b4bc9ef6SAxel Lin .enable_reg = TPS65217_REG_ENABLE, \ 44b4bc9ef6SAxel Lin .enable_mask = _em, \ 45d172f319SAxel Lin .volt_table = _t, \ 466290d606SAxel Lin .linear_ranges = _lr, \ 476290d606SAxel Lin .n_linear_ranges = _nlr, \ 483de56099SRuss Dill .bypass_reg = _sr, \ 493de56099SRuss Dill .bypass_mask = _sm, \ 50a493077fSAnilKumar Ch } \ 51a493077fSAnilKumar Ch 52d172f319SAxel Lin static const unsigned int LDO1_VSEL_table[] = { 53a493077fSAnilKumar Ch 1000000, 1100000, 1200000, 1250000, 54a493077fSAnilKumar Ch 1300000, 1350000, 1400000, 1500000, 55a493077fSAnilKumar Ch 1600000, 1800000, 2500000, 2750000, 56a493077fSAnilKumar Ch 2800000, 3000000, 3100000, 3300000, 57a493077fSAnilKumar Ch }; 58a493077fSAnilKumar Ch 5960ab7f41SMatti Vaittinen static const struct linear_range tps65217_uv1_ranges[] = { 608828bae4SAxel Lin REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000), 61689b9e02SAxel Lin REGULATOR_LINEAR_RANGE(1550000, 25, 52, 50000), 628828bae4SAxel Lin REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000), 630b5e200cSAxel Lin REGULATOR_LINEAR_RANGE(3300000, 56, 63, 0), 646290d606SAxel Lin }; 65a493077fSAnilKumar Ch 6660ab7f41SMatti Vaittinen static const struct linear_range tps65217_uv2_ranges[] = { 678828bae4SAxel Lin REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000), 688828bae4SAxel Lin REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000), 698828bae4SAxel Lin REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000), 70a493077fSAnilKumar Ch }; 71a493077fSAnilKumar Ch 72fc56911bSAxel Lin static int tps65217_pmic_enable(struct regulator_dev *dev) 73a493077fSAnilKumar Ch { 74a493077fSAnilKumar Ch struct tps65217 *tps = rdev_get_drvdata(dev); 756bdaaf0eSSachin Kamat int rid = rdev_get_id(dev); 76a493077fSAnilKumar Ch 77fc56911bSAxel Lin if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) 78a493077fSAnilKumar Ch return -EINVAL; 79a493077fSAnilKumar Ch 80a493077fSAnilKumar Ch /* Enable the regulator and password protection is level 1 */ 81a493077fSAnilKumar Ch return tps65217_set_bits(tps, TPS65217_REG_ENABLE, 82b4bc9ef6SAxel Lin dev->desc->enable_mask, dev->desc->enable_mask, 83a493077fSAnilKumar Ch TPS65217_PROTECT_L1); 84a493077fSAnilKumar Ch } 85a493077fSAnilKumar Ch 86fc56911bSAxel Lin static int tps65217_pmic_disable(struct regulator_dev *dev) 87a493077fSAnilKumar Ch { 88a493077fSAnilKumar Ch struct tps65217 *tps = rdev_get_drvdata(dev); 896bdaaf0eSSachin Kamat int rid = rdev_get_id(dev); 90a493077fSAnilKumar Ch 91fc56911bSAxel Lin if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) 92a493077fSAnilKumar Ch return -EINVAL; 93a493077fSAnilKumar Ch 94a493077fSAnilKumar Ch /* Disable the regulator and password protection is level 1 */ 95a493077fSAnilKumar Ch return tps65217_clear_bits(tps, TPS65217_REG_ENABLE, 96b4bc9ef6SAxel Lin dev->desc->enable_mask, TPS65217_PROTECT_L1); 97a493077fSAnilKumar Ch } 98a493077fSAnilKumar Ch 998b22285fSAxel Lin static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev, 100a493077fSAnilKumar Ch unsigned selector) 101a493077fSAnilKumar Ch { 102a493077fSAnilKumar Ch int ret; 103a493077fSAnilKumar Ch struct tps65217 *tps = rdev_get_drvdata(dev); 104fc56911bSAxel Lin unsigned int rid = rdev_get_id(dev); 105a493077fSAnilKumar Ch 106a493077fSAnilKumar Ch /* Set the voltage based on vsel value and write protect level is 2 */ 107b4bc9ef6SAxel Lin ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, 1088b22285fSAxel Lin selector, TPS65217_PROTECT_L2); 109fc56911bSAxel Lin 110fc56911bSAxel Lin /* Set GO bit for DCDCx to initiate voltage transistion */ 111fc56911bSAxel Lin switch (rid) { 112fc56911bSAxel Lin case TPS65217_DCDC_1 ... TPS65217_DCDC_3: 113fc56911bSAxel Lin ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW, 114fc56911bSAxel Lin TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO, 115fc56911bSAxel Lin TPS65217_PROTECT_L2); 116fc56911bSAxel Lin break; 117a493077fSAnilKumar Ch } 118a493077fSAnilKumar Ch 119fc56911bSAxel Lin return ret; 120fc56911bSAxel Lin } 121fc56911bSAxel Lin 1223de56099SRuss Dill static int tps65217_pmic_set_suspend_enable(struct regulator_dev *dev) 1233de56099SRuss Dill { 1243de56099SRuss Dill struct tps65217 *tps = rdev_get_drvdata(dev); 1253de56099SRuss Dill unsigned int rid = rdev_get_id(dev); 1263de56099SRuss Dill 127f10a5e49SLee Jones if (rid > TPS65217_LDO_4) 1283de56099SRuss Dill return -EINVAL; 1293de56099SRuss Dill 1303de56099SRuss Dill return tps65217_clear_bits(tps, dev->desc->bypass_reg, 1313de56099SRuss Dill dev->desc->bypass_mask, 1323de56099SRuss Dill TPS65217_PROTECT_L1); 1333de56099SRuss Dill } 1343de56099SRuss Dill 1353de56099SRuss Dill static int tps65217_pmic_set_suspend_disable(struct regulator_dev *dev) 1363de56099SRuss Dill { 1373de56099SRuss Dill struct tps65217 *tps = rdev_get_drvdata(dev); 1383de56099SRuss Dill unsigned int rid = rdev_get_id(dev); 1393de56099SRuss Dill 140f10a5e49SLee Jones if (rid > TPS65217_LDO_4) 1413de56099SRuss Dill return -EINVAL; 1423de56099SRuss Dill 1433de56099SRuss Dill if (!tps->strobes[rid]) 1443de56099SRuss Dill return -EINVAL; 1453de56099SRuss Dill 1463de56099SRuss Dill return tps65217_set_bits(tps, dev->desc->bypass_reg, 1473de56099SRuss Dill dev->desc->bypass_mask, 1483de56099SRuss Dill tps->strobes[rid], TPS65217_PROTECT_L1); 1493de56099SRuss Dill } 1503de56099SRuss Dill 151fc56911bSAxel Lin /* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */ 1522c33b50eSAxel Lin static const struct regulator_ops tps65217_pmic_ops = { 153b4bc9ef6SAxel Lin .is_enabled = regulator_is_enabled_regmap, 154fc56911bSAxel Lin .enable = tps65217_pmic_enable, 155fc56911bSAxel Lin .disable = tps65217_pmic_disable, 156b4bc9ef6SAxel Lin .get_voltage_sel = regulator_get_voltage_sel_regmap, 1578b22285fSAxel Lin .set_voltage_sel = tps65217_pmic_set_voltage_sel, 1586290d606SAxel Lin .list_voltage = regulator_list_voltage_linear_range, 1596290d606SAxel Lin .map_voltage = regulator_map_voltage_linear_range, 1603de56099SRuss Dill .set_suspend_enable = tps65217_pmic_set_suspend_enable, 1613de56099SRuss Dill .set_suspend_disable = tps65217_pmic_set_suspend_disable, 162a493077fSAnilKumar Ch }; 163a493077fSAnilKumar Ch 164a493077fSAnilKumar Ch /* Operations permitted on LDO1 */ 1652c33b50eSAxel Lin static const struct regulator_ops tps65217_pmic_ldo1_ops = { 166b4bc9ef6SAxel Lin .is_enabled = regulator_is_enabled_regmap, 167fc56911bSAxel Lin .enable = tps65217_pmic_enable, 168fc56911bSAxel Lin .disable = tps65217_pmic_disable, 169b4bc9ef6SAxel Lin .get_voltage_sel = regulator_get_voltage_sel_regmap, 1708b22285fSAxel Lin .set_voltage_sel = tps65217_pmic_set_voltage_sel, 171d172f319SAxel Lin .list_voltage = regulator_list_voltage_table, 1725957ae1fSAxel Lin .map_voltage = regulator_map_voltage_ascend, 1733de56099SRuss Dill .set_suspend_enable = tps65217_pmic_set_suspend_enable, 1743de56099SRuss Dill .set_suspend_disable = tps65217_pmic_set_suspend_disable, 175a493077fSAnilKumar Ch }; 176a493077fSAnilKumar Ch 17778637a3dSAxel Lin static const struct regulator_desc regulators[] = { 1787d42a7f2SMark Brown TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1", 1797d42a7f2SMark Brown tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1, 1807d42a7f2SMark Brown TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN, 181b4c2e158SMåns Andersson NULL, tps65217_uv1_ranges, 182b4c2e158SMåns Andersson ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1, 1833de56099SRuss Dill TPS65217_SEQ1_DC1_SEQ_MASK), 1847d42a7f2SMark Brown TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2", 1857d42a7f2SMark Brown tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2, 1867d42a7f2SMark Brown TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN, 1877d42a7f2SMark Brown NULL, tps65217_uv1_ranges, 1883de56099SRuss Dill ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1, 1893de56099SRuss Dill TPS65217_SEQ1_DC2_SEQ_MASK), 1907d42a7f2SMark Brown TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3", 1917d42a7f2SMark Brown tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3, 1927d42a7f2SMark Brown TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN, 193b4c2e158SMåns Andersson NULL, tps65217_uv1_ranges, 194b4c2e158SMåns Andersson ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ2, 1953de56099SRuss Dill TPS65217_SEQ2_DC3_SEQ_MASK), 1967d42a7f2SMark Brown TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1", 1977d42a7f2SMark Brown tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1, 1987d42a7f2SMark Brown TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN, 1993de56099SRuss Dill LDO1_VSEL_table, NULL, 0, TPS65217_REG_SEQ2, 2003de56099SRuss Dill TPS65217_SEQ2_LDO1_SEQ_MASK), 2017d42a7f2SMark Brown TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops, 2027d42a7f2SMark Brown 64, TPS65217_REG_DEFLDO2, 2037d42a7f2SMark Brown TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN, 2047d42a7f2SMark Brown NULL, tps65217_uv1_ranges, 2053de56099SRuss Dill ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ3, 2063de56099SRuss Dill TPS65217_SEQ3_LDO2_SEQ_MASK), 2077d42a7f2SMark Brown TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops, 2087d42a7f2SMark Brown 32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK, 209d172f319SAxel Lin TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN, 2106290d606SAxel Lin NULL, tps65217_uv2_ranges, 2113de56099SRuss Dill ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ3, 2123de56099SRuss Dill TPS65217_SEQ3_LDO3_SEQ_MASK), 2137d42a7f2SMark Brown TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops, 2147d42a7f2SMark Brown 32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK, 215d172f319SAxel Lin TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN, 2166290d606SAxel Lin NULL, tps65217_uv2_ranges, 2173de56099SRuss Dill ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ4, 2183de56099SRuss Dill TPS65217_SEQ4_LDO4_SEQ_MASK), 219a493077fSAnilKumar Ch }; 220a493077fSAnilKumar Ch 221a5023574SBill Pemberton static int tps65217_regulator_probe(struct platform_device *pdev) 222a493077fSAnilKumar Ch { 2231922b0f2SAnilKumar Ch struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent); 2241922b0f2SAnilKumar Ch struct tps65217_board *pdata = dev_get_platdata(tps->dev); 225a493077fSAnilKumar Ch struct regulator_dev *rdev; 226c172708dSMark Brown struct regulator_config config = { }; 2273de56099SRuss Dill int i, ret; 2283de56099SRuss Dill unsigned int val; 229a493077fSAnilKumar Ch 2303de56099SRuss Dill /* Allocate memory for strobes */ 231a86854d0SKees Cook tps->strobes = devm_kcalloc(&pdev->dev, 232a86854d0SKees Cook TPS65217_NUM_REGULATOR, sizeof(u8), 233a86854d0SKees Cook GFP_KERNEL); 2344f919ca2SAnton Vasilyev if (!tps->strobes) 2354f919ca2SAnton Vasilyev return -ENOMEM; 2363de56099SRuss Dill 2371922b0f2SAnilKumar Ch platform_set_drvdata(pdev, tps); 2381922b0f2SAnilKumar Ch 2391922b0f2SAnilKumar Ch for (i = 0; i < TPS65217_NUM_REGULATOR; i++) { 2401922b0f2SAnilKumar Ch /* Register the regulators */ 2411922b0f2SAnilKumar Ch config.dev = tps->dev; 24281baf9feSMark Brown if (pdata) 24394ee607cSAxel Lin config.init_data = pdata->tps65217_init_data[i]; 244c172708dSMark Brown config.driver_data = tps; 2451922b0f2SAnilKumar Ch config.regmap = tps->regmap; 246c172708dSMark Brown 2474aac198dSSachin Kamat rdev = devm_regulator_register(&pdev->dev, ®ulators[i], 2484aac198dSSachin Kamat &config); 2491922b0f2SAnilKumar Ch if (IS_ERR(rdev)) { 2501922b0f2SAnilKumar Ch dev_err(tps->dev, "failed to register %s regulator\n", 2511922b0f2SAnilKumar Ch pdev->name); 2524aac198dSSachin Kamat return PTR_ERR(rdev); 2531922b0f2SAnilKumar Ch } 2543de56099SRuss Dill 2553de56099SRuss Dill /* Store default strobe info */ 2563de56099SRuss Dill ret = tps65217_reg_read(tps, regulators[i].bypass_reg, &val); 25744455a6dSLee Jones if (ret) 25844455a6dSLee Jones return ret; 25944455a6dSLee Jones 2603de56099SRuss Dill tps->strobes[i] = val & regulators[i].bypass_mask; 2611922b0f2SAnilKumar Ch } 2627d42a7f2SMark Brown 263a493077fSAnilKumar Ch return 0; 264a493077fSAnilKumar Ch } 265a493077fSAnilKumar Ch 266a493077fSAnilKumar Ch static struct platform_driver tps65217_regulator_driver = { 267a493077fSAnilKumar Ch .driver = { 268a493077fSAnilKumar Ch .name = "tps65217-pmic", 269a493077fSAnilKumar Ch }, 270a493077fSAnilKumar Ch .probe = tps65217_regulator_probe, 271a493077fSAnilKumar Ch }; 272a493077fSAnilKumar Ch 273a493077fSAnilKumar Ch static int __init tps65217_regulator_init(void) 274a493077fSAnilKumar Ch { 275a493077fSAnilKumar Ch return platform_driver_register(&tps65217_regulator_driver); 276a493077fSAnilKumar Ch } 277a493077fSAnilKumar Ch subsys_initcall(tps65217_regulator_init); 278a493077fSAnilKumar Ch 279a493077fSAnilKumar Ch static void __exit tps65217_regulator_exit(void) 280a493077fSAnilKumar Ch { 281a493077fSAnilKumar Ch platform_driver_unregister(&tps65217_regulator_driver); 282a493077fSAnilKumar Ch } 283a493077fSAnilKumar Ch module_exit(tps65217_regulator_exit); 284a493077fSAnilKumar Ch 285a493077fSAnilKumar Ch MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>"); 286a493077fSAnilKumar Ch MODULE_DESCRIPTION("TPS65217 voltage regulator driver"); 287a493077fSAnilKumar Ch MODULE_ALIAS("platform:tps65217-pmic"); 288a493077fSAnilKumar Ch MODULE_LICENSE("GPL v2"); 289