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288 lines
9.1 KiB
288 lines
9.1 KiB
/* |
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* tps65217-regulator.c |
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* |
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* Regulator driver for TPS65217 PMIC |
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* |
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* Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/ |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation version 2. |
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* |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any |
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* kind, whether express or implied; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/device.h> |
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/platform_device.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/mfd/tps65217.h> |
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#define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \ |
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_t, _lr, _nlr, _sr, _sm) \ |
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{ \ |
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.name = _name, \ |
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.id = _id, \ |
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.of_match = of_match_ptr(_of_match), \ |
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.regulators_node= of_match_ptr("regulators"), \ |
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.ops = &_ops, \ |
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.n_voltages = _n, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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.vsel_reg = _vr, \ |
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.vsel_mask = _vm, \ |
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.enable_reg = TPS65217_REG_ENABLE, \ |
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.enable_mask = _em, \ |
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.volt_table = _t, \ |
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.linear_ranges = _lr, \ |
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.n_linear_ranges = _nlr, \ |
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.bypass_reg = _sr, \ |
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.bypass_mask = _sm, \ |
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} \ |
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static const unsigned int LDO1_VSEL_table[] = { |
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1000000, 1100000, 1200000, 1250000, |
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1300000, 1350000, 1400000, 1500000, |
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1600000, 1800000, 2500000, 2750000, |
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2800000, 3000000, 3100000, 3300000, |
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}; |
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static const struct linear_range tps65217_uv1_ranges[] = { |
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REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000), |
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REGULATOR_LINEAR_RANGE(1550000, 25, 52, 50000), |
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REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000), |
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REGULATOR_LINEAR_RANGE(3300000, 56, 63, 0), |
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}; |
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static const struct linear_range tps65217_uv2_ranges[] = { |
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REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000), |
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REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000), |
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REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000), |
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}; |
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static int tps65217_pmic_enable(struct regulator_dev *dev) |
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{ |
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struct tps65217 *tps = rdev_get_drvdata(dev); |
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int rid = rdev_get_id(dev); |
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if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) |
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return -EINVAL; |
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/* Enable the regulator and password protection is level 1 */ |
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return tps65217_set_bits(tps, TPS65217_REG_ENABLE, |
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dev->desc->enable_mask, dev->desc->enable_mask, |
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TPS65217_PROTECT_L1); |
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} |
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static int tps65217_pmic_disable(struct regulator_dev *dev) |
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{ |
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struct tps65217 *tps = rdev_get_drvdata(dev); |
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int rid = rdev_get_id(dev); |
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if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) |
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return -EINVAL; |
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/* Disable the regulator and password protection is level 1 */ |
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return tps65217_clear_bits(tps, TPS65217_REG_ENABLE, |
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dev->desc->enable_mask, TPS65217_PROTECT_L1); |
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} |
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static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev, |
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unsigned selector) |
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{ |
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int ret; |
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struct tps65217 *tps = rdev_get_drvdata(dev); |
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unsigned int rid = rdev_get_id(dev); |
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/* Set the voltage based on vsel value and write protect level is 2 */ |
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ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, |
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selector, TPS65217_PROTECT_L2); |
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/* Set GO bit for DCDCx to initiate voltage transistion */ |
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switch (rid) { |
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case TPS65217_DCDC_1 ... TPS65217_DCDC_3: |
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ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW, |
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TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO, |
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TPS65217_PROTECT_L2); |
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break; |
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} |
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return ret; |
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} |
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static int tps65217_pmic_set_suspend_enable(struct regulator_dev *dev) |
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{ |
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struct tps65217 *tps = rdev_get_drvdata(dev); |
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unsigned int rid = rdev_get_id(dev); |
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if (rid > TPS65217_LDO_4) |
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return -EINVAL; |
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return tps65217_clear_bits(tps, dev->desc->bypass_reg, |
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dev->desc->bypass_mask, |
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TPS65217_PROTECT_L1); |
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} |
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static int tps65217_pmic_set_suspend_disable(struct regulator_dev *dev) |
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{ |
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struct tps65217 *tps = rdev_get_drvdata(dev); |
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unsigned int rid = rdev_get_id(dev); |
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if (rid > TPS65217_LDO_4) |
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return -EINVAL; |
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if (!tps->strobes[rid]) |
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return -EINVAL; |
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return tps65217_set_bits(tps, dev->desc->bypass_reg, |
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dev->desc->bypass_mask, |
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tps->strobes[rid], TPS65217_PROTECT_L1); |
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} |
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/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */ |
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static const struct regulator_ops tps65217_pmic_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = tps65217_pmic_enable, |
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.disable = tps65217_pmic_disable, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = tps65217_pmic_set_voltage_sel, |
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.list_voltage = regulator_list_voltage_linear_range, |
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.map_voltage = regulator_map_voltage_linear_range, |
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.set_suspend_enable = tps65217_pmic_set_suspend_enable, |
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.set_suspend_disable = tps65217_pmic_set_suspend_disable, |
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}; |
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/* Operations permitted on LDO1 */ |
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static const struct regulator_ops tps65217_pmic_ldo1_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = tps65217_pmic_enable, |
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.disable = tps65217_pmic_disable, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = tps65217_pmic_set_voltage_sel, |
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.list_voltage = regulator_list_voltage_table, |
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.map_voltage = regulator_map_voltage_ascend, |
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.set_suspend_enable = tps65217_pmic_set_suspend_enable, |
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.set_suspend_disable = tps65217_pmic_set_suspend_disable, |
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}; |
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static const struct regulator_desc regulators[] = { |
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TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1", |
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tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1, |
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TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN, |
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NULL, tps65217_uv1_ranges, |
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ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1, |
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TPS65217_SEQ1_DC1_SEQ_MASK), |
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TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2", |
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tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2, |
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TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN, |
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NULL, tps65217_uv1_ranges, |
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ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1, |
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TPS65217_SEQ1_DC2_SEQ_MASK), |
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TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3", |
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tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3, |
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TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN, |
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NULL, tps65217_uv1_ranges, |
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ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ2, |
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TPS65217_SEQ2_DC3_SEQ_MASK), |
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TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1", |
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tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1, |
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TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN, |
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LDO1_VSEL_table, NULL, 0, TPS65217_REG_SEQ2, |
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TPS65217_SEQ2_LDO1_SEQ_MASK), |
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TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops, |
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64, TPS65217_REG_DEFLDO2, |
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TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN, |
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NULL, tps65217_uv1_ranges, |
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ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ3, |
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TPS65217_SEQ3_LDO2_SEQ_MASK), |
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TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops, |
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32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK, |
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TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN, |
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NULL, tps65217_uv2_ranges, |
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ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ3, |
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TPS65217_SEQ3_LDO3_SEQ_MASK), |
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TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops, |
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32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK, |
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TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN, |
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NULL, tps65217_uv2_ranges, |
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ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ4, |
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TPS65217_SEQ4_LDO4_SEQ_MASK), |
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}; |
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static int tps65217_regulator_probe(struct platform_device *pdev) |
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{ |
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struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent); |
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struct tps65217_board *pdata = dev_get_platdata(tps->dev); |
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struct regulator_dev *rdev; |
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struct regulator_config config = { }; |
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int i, ret; |
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unsigned int val; |
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/* Allocate memory for strobes */ |
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tps->strobes = devm_kcalloc(&pdev->dev, |
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TPS65217_NUM_REGULATOR, sizeof(u8), |
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GFP_KERNEL); |
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if (!tps->strobes) |
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return -ENOMEM; |
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platform_set_drvdata(pdev, tps); |
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for (i = 0; i < TPS65217_NUM_REGULATOR; i++) { |
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/* Register the regulators */ |
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config.dev = tps->dev; |
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if (pdata) |
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config.init_data = pdata->tps65217_init_data[i]; |
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config.driver_data = tps; |
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config.regmap = tps->regmap; |
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rdev = devm_regulator_register(&pdev->dev, ®ulators[i], |
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&config); |
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if (IS_ERR(rdev)) { |
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dev_err(tps->dev, "failed to register %s regulator\n", |
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pdev->name); |
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return PTR_ERR(rdev); |
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} |
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/* Store default strobe info */ |
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ret = tps65217_reg_read(tps, regulators[i].bypass_reg, &val); |
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if (ret) |
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return ret; |
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tps->strobes[i] = val & regulators[i].bypass_mask; |
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} |
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return 0; |
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} |
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static struct platform_driver tps65217_regulator_driver = { |
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.driver = { |
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.name = "tps65217-pmic", |
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}, |
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.probe = tps65217_regulator_probe, |
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}; |
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static int __init tps65217_regulator_init(void) |
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{ |
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return platform_driver_register(&tps65217_regulator_driver); |
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} |
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subsys_initcall(tps65217_regulator_init); |
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static void __exit tps65217_regulator_exit(void) |
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{ |
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platform_driver_unregister(&tps65217_regulator_driver); |
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} |
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module_exit(tps65217_regulator_exit); |
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MODULE_AUTHOR("AnilKumar Ch <[email protected]>"); |
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MODULE_DESCRIPTION("TPS65217 voltage regulator driver"); |
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MODULE_ALIAS("platform:tps65217-pmic"); |
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MODULE_LICENSE("GPL v2");
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