Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 1 | /* |
| 2 | * tps65218-regulator.c |
| 3 | * |
| 4 | * Regulator driver for TPS65218 PMIC |
| 5 | * |
| 6 | * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any |
| 13 | * kind, whether expressed or implied; without even the implied warranty |
| 14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License version 2 for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/platform_device.h> |
| 24 | #include <linux/of_device.h> |
| 25 | #include <linux/regulator/of_regulator.h> |
| 26 | #include <linux/regulator/driver.h> |
| 27 | #include <linux/regulator/machine.h> |
| 28 | #include <linux/mfd/tps65218.h> |
| 29 | |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 30 | enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 }; |
| 31 | |
| 32 | #define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t, \ |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 33 | _lr, _nlr, _delay) \ |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 34 | { \ |
| 35 | .name = _name, \ |
| 36 | .id = _id, \ |
| 37 | .ops = &_ops, \ |
| 38 | .n_voltages = _n, \ |
| 39 | .type = REGULATOR_VOLTAGE, \ |
| 40 | .owner = THIS_MODULE, \ |
| 41 | .vsel_reg = _vr, \ |
| 42 | .vsel_mask = _vm, \ |
| 43 | .enable_reg = _er, \ |
| 44 | .enable_mask = _em, \ |
| 45 | .volt_table = _t, \ |
| 46 | .linear_ranges = _lr, \ |
| 47 | .n_linear_ranges = _nlr, \ |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 48 | .ramp_delay = _delay, \ |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 49 | } \ |
| 50 | |
| 51 | #define TPS65218_INFO(_id, _nm, _min, _max) \ |
| 52 | { \ |
| 53 | .id = _id, \ |
| 54 | .name = _nm, \ |
| 55 | .min_uV = _min, \ |
| 56 | .max_uV = _max, \ |
| 57 | } |
| 58 | |
| 59 | static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = { |
| 60 | REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000), |
| 61 | REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000), |
| 62 | }; |
| 63 | |
| 64 | static const struct regulator_linear_range ldo1_dcdc3_ranges[] = { |
| 65 | REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000), |
| 66 | REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000), |
| 67 | }; |
| 68 | |
| 69 | static const struct regulator_linear_range dcdc4_ranges[] = { |
| 70 | REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000), |
Felipe Balbi | 42ab0f3 | 2014-07-08 14:09:12 -0500 | [diff] [blame] | 71 | REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 72 | }; |
| 73 | |
| 74 | static struct tps_info tps65218_pmic_regs[] = { |
| 75 | TPS65218_INFO(0, "DCDC1", 850000, 167500), |
| 76 | TPS65218_INFO(1, "DCDC2", 850000, 1675000), |
| 77 | TPS65218_INFO(2, "DCDC3", 900000, 3400000), |
| 78 | TPS65218_INFO(3, "DCDC4", 1175000, 3400000), |
| 79 | TPS65218_INFO(4, "DCDC5", 1000000, 1000000), |
| 80 | TPS65218_INFO(5, "DCDC6", 1800000, 1800000), |
| 81 | TPS65218_INFO(6, "LDO1", 900000, 3400000), |
| 82 | }; |
| 83 | |
| 84 | #define TPS65218_OF_MATCH(comp, label) \ |
| 85 | { \ |
| 86 | .compatible = comp, \ |
| 87 | .data = &label, \ |
| 88 | } |
| 89 | |
| 90 | static const struct of_device_id tps65218_of_match[] = { |
| 91 | TPS65218_OF_MATCH("ti,tps65218-dcdc1", tps65218_pmic_regs[DCDC1]), |
| 92 | TPS65218_OF_MATCH("ti,tps65218-dcdc2", tps65218_pmic_regs[DCDC2]), |
| 93 | TPS65218_OF_MATCH("ti,tps65218-dcdc3", tps65218_pmic_regs[DCDC3]), |
| 94 | TPS65218_OF_MATCH("ti,tps65218-dcdc4", tps65218_pmic_regs[DCDC4]), |
| 95 | TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs[DCDC5]), |
| 96 | TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs[DCDC6]), |
| 97 | TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs[LDO1]), |
Axel Lin | c46b529 | 2014-02-19 16:33:21 +0800 | [diff] [blame] | 98 | { } |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 99 | }; |
| 100 | MODULE_DEVICE_TABLE(of, tps65218_of_match); |
| 101 | |
| 102 | static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev, |
| 103 | unsigned selector) |
| 104 | { |
| 105 | int ret; |
| 106 | struct tps65218 *tps = rdev_get_drvdata(dev); |
| 107 | unsigned int rid = rdev_get_id(dev); |
| 108 | |
| 109 | /* Set the voltage based on vsel value and write protect level is 2 */ |
| 110 | ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, |
| 111 | selector, TPS65218_PROTECT_L1); |
| 112 | |
| 113 | /* Set GO bit for DCDC1/2 to initiate voltage transistion */ |
| 114 | switch (rid) { |
| 115 | case TPS65218_DCDC_1: |
| 116 | case TPS65218_DCDC_2: |
| 117 | ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE, |
| 118 | TPS65218_SLEW_RATE_GO, |
| 119 | TPS65218_SLEW_RATE_GO, |
| 120 | TPS65218_PROTECT_L1); |
| 121 | break; |
| 122 | } |
| 123 | |
| 124 | return ret; |
| 125 | } |
| 126 | |
| 127 | static int tps65218_pmic_enable(struct regulator_dev *dev) |
| 128 | { |
| 129 | struct tps65218 *tps = rdev_get_drvdata(dev); |
Sachin Kamat | 5f986f7 | 2014-06-24 13:59:16 +0530 | [diff] [blame] | 130 | int rid = rdev_get_id(dev); |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 131 | |
| 132 | if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) |
| 133 | return -EINVAL; |
| 134 | |
| 135 | /* Enable the regulator and password protection is level 1 */ |
| 136 | return tps65218_set_bits(tps, dev->desc->enable_reg, |
| 137 | dev->desc->enable_mask, dev->desc->enable_mask, |
| 138 | TPS65218_PROTECT_L1); |
| 139 | } |
| 140 | |
| 141 | static int tps65218_pmic_disable(struct regulator_dev *dev) |
| 142 | { |
| 143 | struct tps65218 *tps = rdev_get_drvdata(dev); |
Sachin Kamat | 5f986f7 | 2014-06-24 13:59:16 +0530 | [diff] [blame] | 144 | int rid = rdev_get_id(dev); |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 145 | |
| 146 | if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) |
| 147 | return -EINVAL; |
| 148 | |
| 149 | /* Disable the regulator and password protection is level 1 */ |
| 150 | return tps65218_clear_bits(tps, dev->desc->enable_reg, |
| 151 | dev->desc->enable_mask, TPS65218_PROTECT_L1); |
| 152 | } |
| 153 | |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 154 | /* Operations permitted on DCDC1, DCDC2 */ |
| 155 | static struct regulator_ops tps65218_dcdc12_ops = { |
| 156 | .is_enabled = regulator_is_enabled_regmap, |
| 157 | .enable = tps65218_pmic_enable, |
| 158 | .disable = tps65218_pmic_disable, |
| 159 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 160 | .set_voltage_sel = tps65218_pmic_set_voltage_sel, |
| 161 | .list_voltage = regulator_list_voltage_linear_range, |
| 162 | .map_voltage = regulator_map_voltage_linear_range, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 163 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | /* Operations permitted on DCDC3, DCDC4 and LDO1 */ |
| 167 | static struct regulator_ops tps65218_ldo1_dcdc34_ops = { |
| 168 | .is_enabled = regulator_is_enabled_regmap, |
| 169 | .enable = tps65218_pmic_enable, |
| 170 | .disable = tps65218_pmic_disable, |
| 171 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 172 | .set_voltage_sel = tps65218_pmic_set_voltage_sel, |
| 173 | .list_voltage = regulator_list_voltage_linear_range, |
| 174 | .map_voltage = regulator_map_voltage_linear_range, |
| 175 | }; |
| 176 | |
| 177 | /* Operations permitted on DCDC5, DCDC6 */ |
| 178 | static struct regulator_ops tps65218_dcdc56_pmic_ops = { |
| 179 | .is_enabled = regulator_is_enabled_regmap, |
| 180 | .enable = tps65218_pmic_enable, |
| 181 | .disable = tps65218_pmic_disable, |
| 182 | }; |
| 183 | |
| 184 | static const struct regulator_desc regulators[] = { |
| 185 | TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, tps65218_dcdc12_ops, 64, |
| 186 | TPS65218_REG_CONTROL_DCDC1, |
| 187 | TPS65218_CONTROL_DCDC1_MASK, |
| 188 | TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, NULL, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 189 | dcdc1_dcdc2_ranges, 2, 4000), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 190 | TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64, |
| 191 | TPS65218_REG_CONTROL_DCDC2, |
| 192 | TPS65218_CONTROL_DCDC2_MASK, |
| 193 | TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, NULL, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 194 | dcdc1_dcdc2_ranges, 2, 4000), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 195 | TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops, |
| 196 | 64, TPS65218_REG_CONTROL_DCDC3, |
| 197 | TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1, |
| 198 | TPS65218_ENABLE1_DC3_EN, NULL, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 199 | ldo1_dcdc3_ranges, 2, 0), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 200 | TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops, |
| 201 | 53, TPS65218_REG_CONTROL_DCDC4, |
| 202 | TPS65218_CONTROL_DCDC4_MASK, |
| 203 | TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, NULL, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 204 | dcdc4_ranges, 2, 0), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 205 | TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops, |
| 206 | 1, -1, -1, TPS65218_REG_ENABLE1, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 207 | TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0, 0), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 208 | TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops, |
| 209 | 1, -1, -1, TPS65218_REG_ENABLE1, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 210 | TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0, 0), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 211 | TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64, |
Keerthy | 0eada6a | 2014-06-18 10:17:48 -0500 | [diff] [blame] | 212 | TPS65218_REG_CONTROL_LDO1, |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 213 | TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2, |
| 214 | TPS65218_ENABLE2_LDO1_EN, NULL, ldo1_dcdc3_ranges, |
Axel Lin | 5ab9be4 | 2014-05-22 09:26:47 +0800 | [diff] [blame] | 215 | 2, 0), |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 216 | }; |
| 217 | |
| 218 | static int tps65218_regulator_probe(struct platform_device *pdev) |
| 219 | { |
| 220 | struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent); |
| 221 | struct regulator_init_data *init_data; |
| 222 | const struct tps_info *template; |
| 223 | struct regulator_dev *rdev; |
| 224 | const struct of_device_id *match; |
| 225 | struct regulator_config config = { }; |
| 226 | int id; |
| 227 | |
| 228 | match = of_match_device(tps65218_of_match, &pdev->dev); |
Axel Lin | 948838a | 2014-02-19 16:35:03 +0800 | [diff] [blame] | 229 | if (!match) |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 230 | return -ENODEV; |
Axel Lin | 948838a | 2014-02-19 16:35:03 +0800 | [diff] [blame] | 231 | |
| 232 | template = match->data; |
| 233 | id = template->id; |
| 234 | init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 235 | |
| 236 | platform_set_drvdata(pdev, tps); |
| 237 | |
| 238 | tps->info[id] = &tps65218_pmic_regs[id]; |
| 239 | config.dev = &pdev->dev; |
| 240 | config.init_data = init_data; |
| 241 | config.driver_data = tps; |
| 242 | config.regmap = tps->regmap; |
Keerthy | d2fa87c | 2014-06-18 10:17:47 -0500 | [diff] [blame] | 243 | config.of_node = pdev->dev.of_node; |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 244 | |
| 245 | rdev = devm_regulator_register(&pdev->dev, ®ulators[id], &config); |
| 246 | if (IS_ERR(rdev)) { |
| 247 | dev_err(tps->dev, "failed to register %s regulator\n", |
| 248 | pdev->name); |
| 249 | return PTR_ERR(rdev); |
| 250 | } |
| 251 | |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | static struct platform_driver tps65218_regulator_driver = { |
| 256 | .driver = { |
| 257 | .name = "tps65218-pmic", |
| 258 | .owner = THIS_MODULE, |
Axel Lin | 948838a | 2014-02-19 16:35:03 +0800 | [diff] [blame] | 259 | .of_match_table = tps65218_of_match, |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 260 | }, |
| 261 | .probe = tps65218_regulator_probe, |
Keerthy | 90e7d52 | 2014-02-06 11:20:13 +0530 | [diff] [blame] | 262 | }; |
| 263 | |
| 264 | module_platform_driver(tps65218_regulator_driver); |
| 265 | |
| 266 | MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); |
| 267 | MODULE_DESCRIPTION("TPS65218 voltage regulator driver"); |
| 268 | MODULE_ALIAS("platform:tps65218-pmic"); |
| 269 | MODULE_LICENSE("GPL v2"); |