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33f9d8c0b4
This patch adds support for TPS65912 PMIC regulators. The regulators set consists of 4 DCDCs and 10 LDOs. The output voltages are configurable and are meant to supply power to the main processor and other components. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
168 lines
5.6 KiB
C
168 lines
5.6 KiB
C
/*
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* Regulator driver for TI TPS65912x PMICs
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*
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* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
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* Andrew F. Davis <afd@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 version 2 as
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* published by the Free Software Foundation.
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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 expressed 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 version 2 for more details.
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*
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* Based on the TPS65218 driver and the previous TPS65912 driver by
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* Margarita Olaya Cabrera <magi@slimlogic.co.uk>
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/mfd/tps65912.h>
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enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
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LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
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#define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \
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[_id] = { \
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.name = _name, \
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.of_match = _of_match, \
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.regulators_node = "regulators", \
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.id = _id, \
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.ops = &_ops, \
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.n_voltages = 64, \
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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 = 0x3f, \
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.enable_reg = _er, \
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.enable_mask = BIT(7), \
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.volt_table = NULL, \
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.linear_ranges = _lr, \
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.n_linear_ranges = ARRAY_SIZE(_lr), \
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}
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static const struct regulator_linear_range tps65912_dcdc_ranges[] = {
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REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
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};
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static const struct regulator_linear_range tps65912_ldo_ranges[] = {
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REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
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REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
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REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
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};
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/* Operations permitted on DCDCx */
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static struct regulator_ops tps65912_ops_dcdc = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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};
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/* Operations permitted on LDOx */
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static struct regulator_ops tps65912_ops_ldo = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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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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};
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static const struct regulator_desc regulators[] = {
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TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
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TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
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tps65912_dcdc_ranges),
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TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
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TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
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tps65912_dcdc_ranges),
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TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
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TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
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tps65912_dcdc_ranges),
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TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
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TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
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tps65912_dcdc_ranges),
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TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
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TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
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TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
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TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
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TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
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TPS65912_LDO5, TPS65912_LDO5,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
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TPS65912_LDO6, TPS65912_LDO6,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
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TPS65912_LDO7, TPS65912_LDO7,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
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TPS65912_LDO8, TPS65912_LDO8,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
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TPS65912_LDO9, TPS65912_LDO9,
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tps65912_ldo_ranges),
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TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
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TPS65912_LDO10, TPS65912_LDO10,
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tps65912_ldo_ranges),
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};
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static int tps65912_regulator_probe(struct platform_device *pdev)
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{
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struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
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struct regulator_config config = { };
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struct regulator_dev *rdev;
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int i;
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platform_set_drvdata(pdev, tps);
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config.dev = &pdev->dev;
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config.driver_data = tps;
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config.dev->of_node = tps->dev->of_node;
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config.regmap = tps->regmap;
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for (i = 0; i < ARRAY_SIZE(regulators); i++) {
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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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}
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return 0;
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}
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static const struct platform_device_id tps65912_regulator_id_table[] = {
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{ "tps65912-regulator", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
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static struct platform_driver tps65912_regulator_driver = {
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.driver = {
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.name = "tps65912-regulator",
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},
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.probe = tps65912_regulator_probe,
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.id_table = tps65912_regulator_id_table,
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};
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module_platform_driver(tps65912_regulator_driver);
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MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
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MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
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MODULE_LICENSE("GPL v2");
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