regulator: da9210: New driver
I2C driver for the Dialog DA9210 Multi-phase 12A DC-DC Buck. Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: David Dajun Chen <david.chen@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Steve Twiss
Mark Brown
parent
82b736df4d
commit
16f10918c9
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@ -147,6 +147,16 @@ config REGULATOR_DA9055
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This driver can also be built as a module. If so, the module
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will be called da9055-regulator.
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config REGULATOR_DA9210
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tristate "Dialog Semiconductor DA9210 regulator"
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depends on I2C
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select REGMAP_I2C
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help
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Say y here to support for the Dialog Semiconductor DA9210.
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The DA9210 is a multi-phase synchronous step down
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converter 12A DC-DC Buck controlled through an I2C
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interface.
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config REGULATOR_DBX500_PRCMU
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bool
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@ -20,6 +20,7 @@ obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
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obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
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obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o
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obj-$(CONFIG_REGULATOR_DA9055) += da9055-regulator.o
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obj-$(CONFIG_REGULATOR_DA9210) += da9210-regulator.o
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obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o
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obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
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obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o
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@ -0,0 +1,197 @@
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/*
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* da9210-regulator.c - Regulator device driver for DA9210
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* Copyright (C) 2013 Dialog Semiconductor Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.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/regmap.h>
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#include "da9210-regulator.h"
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struct da9210 {
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struct regulator_dev *rdev;
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struct regmap *regmap;
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};
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static const struct regmap_config da9210_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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static int da9210_set_current_limit(struct regulator_dev *rdev, int min_uA,
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int max_uA);
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static int da9210_get_current_limit(struct regulator_dev *rdev);
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static struct regulator_ops da9210_buck_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear,
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.set_current_limit = da9210_set_current_limit,
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.get_current_limit = da9210_get_current_limit,
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};
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/* Default limits measured in millivolts and milliamps */
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#define DA9210_MIN_MV 300
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#define DA9210_MAX_MV 1570
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#define DA9210_STEP_MV 10
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/* Current limits for buck (uA) indices corresponds with register values */
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static const int da9210_buck_limits[] = {
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1600000, 1800000, 2000000, 2200000, 2400000, 2600000, 2800000, 3000000,
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3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 4600000
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};
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static const struct regulator_desc da9210_reg = {
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.name = "DA9210",
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.id = 0,
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.ops = &da9210_buck_ops,
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.type = REGULATOR_VOLTAGE,
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.n_voltages = ((DA9210_MAX_MV - DA9210_MIN_MV) / DA9210_STEP_MV) + 1,
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.min_uV = (DA9210_MIN_MV * 1000),
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.uV_step = (DA9210_STEP_MV * 1000),
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.vsel_reg = DA9210_REG_VBUCK_A,
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.vsel_mask = DA9210_VBUCK_MASK,
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.enable_reg = DA9210_REG_BUCK_CONT,
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.enable_mask = DA9210_BUCK_EN,
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.owner = THIS_MODULE,
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};
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static int da9210_set_current_limit(struct regulator_dev *rdev, int min_uA,
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int max_uA)
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{
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struct da9210 *chip = rdev_get_drvdata(rdev);
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unsigned int sel;
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int i;
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/* search for closest to maximum */
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for (i = ARRAY_SIZE(da9210_buck_limits)-1; i >= 0; i--) {
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if (min_uA <= da9210_buck_limits[i] &&
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max_uA >= da9210_buck_limits[i]) {
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sel = i;
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sel = sel << DA9210_BUCK_ILIM_SHIFT;
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return regmap_update_bits(chip->regmap,
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DA9210_REG_BUCK_ILIM,
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DA9210_BUCK_ILIM_MASK, sel);
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}
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}
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return -EINVAL;
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}
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static int da9210_get_current_limit(struct regulator_dev *rdev)
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{
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struct da9210 *chip = rdev_get_drvdata(rdev);
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unsigned int data;
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unsigned int sel;
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int ret;
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ret = regmap_read(chip->regmap, DA9210_REG_BUCK_ILIM, &data);
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if (ret < 0)
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return ret;
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/* select one of 16 values: 0000 (1600mA) to 1111 (4600mA) */
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sel = (data & DA9210_BUCK_ILIM_MASK) >> DA9210_BUCK_ILIM_SHIFT;
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return da9210_buck_limits[sel];
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}
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/*
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* I2C driver interface functions
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*/
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static int da9210_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct da9210 *chip;
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struct da9210_pdata *pdata = i2c->dev.platform_data;
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struct regulator_dev *rdev = NULL;
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struct regulator_config config = { };
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int error;
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chip = devm_kzalloc(&i2c->dev, sizeof(struct da9210), GFP_KERNEL);
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if (NULL == chip) {
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dev_err(&i2c->dev,
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"Cannot kzalloc memory for regulator structure\n");
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return -ENOMEM;
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}
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chip->regmap = devm_regmap_init_i2c(i2c, &da9210_regmap_config);
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if (IS_ERR(chip->regmap)) {
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error = PTR_ERR(chip->regmap);
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dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
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error);
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return error;
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}
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config.dev = &i2c->dev;
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if (pdata)
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config.init_data = &pdata->da9210_constraints;
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config.driver_data = chip;
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config.regmap = chip->regmap;
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rdev = regulator_register(&da9210_reg, &config);
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if (IS_ERR(rdev)) {
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dev_err(&i2c->dev, "Failed to register DA9210 regulator\n");
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return PTR_ERR(rdev);
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}
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chip->rdev = rdev;
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i2c_set_clientdata(i2c, chip);
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return 0;
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}
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static int da9210_i2c_remove(struct i2c_client *i2c)
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{
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struct da9210 *chip = i2c_get_clientdata(i2c);
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regulator_unregister(chip->rdev);
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return 0;
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}
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static const struct i2c_device_id da9210_i2c_id[] = {
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{"da9210", 0},
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{},
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};
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MODULE_DEVICE_TABLE(i2c, da9210_i2c_id);
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static struct i2c_driver da9210_regulator_driver = {
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.driver = {
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.name = "da9210",
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.owner = THIS_MODULE,
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},
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.probe = da9210_i2c_probe,
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.remove = da9210_i2c_remove,
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.id_table = da9210_i2c_id,
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};
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module_i2c_driver(da9210_regulator_driver);
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MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
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MODULE_DESCRIPTION("Regulator device driver for Dialog DA9210");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("i2c:da9210");
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@ -0,0 +1,288 @@
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/*
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* da9210-regulator.h - Regulator definitions for DA9210
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* Copyright (C) 2013 Dialog Semiconductor Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __DA9210_REGISTERS_H__
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#define __DA9210_REGISTERS_H__
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struct da9210_pdata {
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struct regulator_init_data da9210_constraints;
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};
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/* Page selection */
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#define DA9210_REG_PAGE_CON 0x00
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/* System Control and Event Registers */
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#define DA9210_REG_STATUS_A 0x50
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#define DA9210_REG_STATUS_B 0x51
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#define DA9210_REG_EVENT_A 0x52
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#define DA9210_REG_EVENT_B 0x53
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#define DA9210_REG_MASK_A 0x54
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#define DA9210_REG_MASK_B 0x55
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#define DA9210_REG_CONTROL_A 0x56
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/* GPIO Control Registers */
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#define DA9210_REG_GPIO_0_1 0x58
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#define DA9210_REG_GPIO_2_3 0x59
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#define DA9210_REG_GPIO_4_5 0x5A
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#define DA9210_REG_GPIO_6 0x5B
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/* Regulator Registers */
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#define DA9210_REG_BUCK_CONT 0x5D
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#define DA9210_REG_BUCK_ILIM 0xD0
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#define DA9210_REG_BUCK_CONF1 0xD1
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#define DA9210_REG_BUCK_CONF2 0xD2
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#define DA9210_REG_VBACK_AUTO 0xD4
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#define DA9210_REG_VBACK_BASE 0xD5
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#define DA9210_REG_VBACK_MAX_DVC_IF 0xD6
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#define DA9210_REG_VBACK_DVC 0xD7
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#define DA9210_REG_VBUCK_A 0xD8
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#define DA9210_REG_VBUCK_B 0xD9
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/* I2C Interface Settings */
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#define DA9210_REG_INTERFACE 0x105
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/* OTP */
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#define DA9210_REG_OPT_COUNT 0x140
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#define DA9210_REG_OPT_ADDR 0x141
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#define DA9210_REG_OPT_DATA 0x142
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/* Customer Trim and Configuration */
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#define DA9210_REG_CONFIG_A 0x143
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#define DA9210_REG_CONFIG_B 0x144
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#define DA9210_REG_CONFIG_C 0x145
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#define DA9210_REG_CONFIG_D 0x146
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#define DA9210_REG_CONFIG_E 0x147
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/*
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* Registers bits
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*/
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/* DA9210_REG_PAGE_CON (addr=0x00) */
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#define DA9210_PEG_PAGE_SHIFT 0
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#define DA9210_REG_PAGE_MASK 0x0F
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/* On I2C registers 0x00 - 0xFF */
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#define DA9210_REG_PAGE0 0
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/* On I2C registers 0x100 - 0x1FF */
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#define DA9210_REG_PAGE2 2
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#define DA9210_PAGE_WRITE_MODE 0x00
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#define DA9210_REPEAT_WRITE_MODE 0x40
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#define DA9210_PAGE_REVERT 0x80
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/* DA9210_REG_STATUS_A (addr=0x50) */
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#define DA9210_GPI0 0x01
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#define DA9210_GPI1 0x02
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#define DA9210_GPI2 0x04
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#define DA9210_GPI3 0x08
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#define DA9210_GPI4 0x10
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#define DA9210_GPI5 0x20
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#define DA9210_GPI6 0x40
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/* DA9210_REG_EVENT_A (addr=0x52) */
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#define DA9210_E_GPI0 0x01
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#define DA9210_E_GPI1 0x02
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#define DA9210_E_GPI2 0x04
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#define DA9210_E_GPI3 0x08
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#define DA9210_E_GPI4 0x10
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#define DA9210_E_GPI5 0x20
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#define DA9210_E_GPI6 0x40
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/* DA9210_REG_EVENT_B (addr=0x53) */
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#define DA9210_E_OVCURR 0x01
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#define DA9210_E_NPWRGOOD 0x02
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#define DA9210_E_TEMP_WARN 0x04
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#define DA9210_E_TEMP_CRIT 0x08
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#define DA9210_E_VMAX 0x10
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/* DA9210_REG_MASK_A (addr=0x54) */
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#define DA9210_M_GPI0 0x01
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#define DA9210_M_GPI1 0x02
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#define DA9210_M_GPI2 0x04
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#define DA9210_M_GPI3 0x08
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#define DA9210_M_GPI4 0x10
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#define DA9210_M_GPI5 0x20
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#define DA9210_M_GPI6 0x40
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/* DA9210_REG_MASK_B (addr=0x55) */
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#define DA9210_M_OVCURR 0x01
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#define DA9210_M_NPWRGOOD 0x02
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#define DA9210_M_TEMP_WARN 0x04
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#define DA9210_M_TEMP_CRIT 0x08
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#define DA9210_M_VMAX 0x10
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/* DA9210_REG_CONTROL_A (addr=0x56) */
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#define DA9210_DEBOUNCING_SHIFT 0
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#define DA9210_DEBOUNCING_MASK 0x07
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#define DA9210_SLEW_RATE_SHIFT 3
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#define DA9210_SLEW_RATE_MASK 0x18
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#define DA9210_V_LOCK 0x20
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/* DA9210_REG_GPIO_0_1 (addr=0x58) */
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#define DA9210_GPIO0_PIN_SHIFT 0
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#define DA9210_GPIO0_PIN_MASK 0x03
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#define DA9210_GPIO0_PIN_GPI 0x00
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#define DA9210_GPIO0_PIN_GPO_OD 0x02
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#define DA9210_GPIO0_PIN_GPO 0x03
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#define DA9210_GPIO0_TYPE 0x04
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#define DA9210_GPIO0_TYPE_GPI 0x00
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#define DA9210_GPIO0_TYPE_GPO 0x04
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#define DA9210_GPIO0_MODE 0x08
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#define DA9210_GPIO1_PIN_SHIFT 4
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#define DA9210_GPIO1_PIN_MASK 0x30
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#define DA9210_GPIO1_PIN_GPI 0x00
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#define DA9210_GPIO1_PIN_VERROR 0x10
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#define DA9210_GPIO1_PIN_GPO_OD 0x20
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#define DA9210_GPIO1_PIN_GPO 0x30
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#define DA9210_GPIO1_TYPE_SHIFT 0x40
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#define DA9210_GPIO1_TYPE_GPI 0x00
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#define DA9210_GPIO1_TYPE_GPO 0x40
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#define DA9210_GPIO1_MODE 0x80
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/* DA9210_REG_GPIO_2_3 (addr=0x59) */
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#define DA9210_GPIO2_PIN_SHIFT 0
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#define DA9210_GPIO2_PIN_MASK 0x03
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#define DA9210_GPIO2_PIN_GPI 0x00
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#define DA9210_GPIO5_PIN_BUCK_CLK 0x10
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#define DA9210_GPIO2_PIN_GPO_OD 0x02
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#define DA9210_GPIO2_PIN_GPO 0x03
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#define DA9210_GPIO2_TYPE 0x04
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#define DA9210_GPIO2_TYPE_GPI 0x00
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#define DA9210_GPIO2_TYPE_GPO 0x04
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#define DA9210_GPIO2_MODE 0x08
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#define DA9210_GPIO3_PIN_SHIFT 4
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#define DA9210_GPIO3_PIN_MASK 0x30
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#define DA9210_GPIO3_PIN_GPI 0x00
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#define DA9210_GPIO3_PIN_IERROR 0x10
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#define DA9210_GPIO3_PIN_GPO_OD 0x20
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#define DA9210_GPIO3_PIN_GPO 0x30
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#define DA9210_GPIO3_TYPE_SHIFT 0x40
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#define DA9210_GPIO3_TYPE_GPI 0x00
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#define DA9210_GPIO3_TYPE_GPO 0x40
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#define DA9210_GPIO3_MODE 0x80
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/* DA9210_REG_GPIO_4_5 (addr=0x5A) */
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#define DA9210_GPIO4_PIN_SHIFT 0
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#define DA9210_GPIO4_PIN_MASK 0x03
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#define DA9210_GPIO4_PIN_GPI 0x00
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#define DA9210_GPIO4_PIN_GPO_OD 0x02
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#define DA9210_GPIO4_PIN_GPO 0x03
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#define DA9210_GPIO4_TYPE 0x04
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#define DA9210_GPIO4_TYPE_GPI 0x00
|
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#define DA9210_GPIO4_TYPE_GPO 0x04
|
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#define DA9210_GPIO4_MODE 0x08
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#define DA9210_GPIO5_PIN_SHIFT 4
|
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#define DA9210_GPIO5_PIN_MASK 0x30
|
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#define DA9210_GPIO5_PIN_GPI 0x00
|
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#define DA9210_GPIO5_PIN_INTERFACE 0x01
|
||||
#define DA9210_GPIO5_PIN_GPO_OD 0x20
|
||||
#define DA9210_GPIO5_PIN_GPO 0x30
|
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#define DA9210_GPIO5_TYPE_SHIFT 0x40
|
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#define DA9210_GPIO5_TYPE_GPI 0x00
|
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#define DA9210_GPIO5_TYPE_GPO 0x40
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#define DA9210_GPIO5_MODE 0x80
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|
||||
/* DA9210_REG_GPIO_6 (addr=0x5B) */
|
||||
#define DA9210_GPIO6_PIN_SHIFT 0
|
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#define DA9210_GPIO6_PIN_MASK 0x03
|
||||
#define DA9210_GPIO6_PIN_GPI 0x00
|
||||
#define DA9210_GPIO6_PIN_INTERFACE 0x01
|
||||
#define DA9210_GPIO6_PIN_GPO_OD 0x02
|
||||
#define DA9210_GPIO6_PIN_GPO 0x03
|
||||
#define DA9210_GPIO6_TYPE 0x04
|
||||
#define DA9210_GPIO6_TYPE_GPI 0x00
|
||||
#define DA9210_GPIO6_TYPE_GPO 0x04
|
||||
#define DA9210_GPIO6_MODE 0x08
|
||||
|
||||
/* DA9210_REG_BUCK_CONT (addr=0x5D) */
|
||||
#define DA9210_BUCK_EN 0x01
|
||||
#define DA9210_BUCK_GPI_SHIFT 1
|
||||
#define DA9210_BUCK_GPI_MASK 0x06
|
||||
#define DA9210_BUCK_GPI_OFF 0x00
|
||||
#define DA9210_BUCK_GPI_GPIO0 0x02
|
||||
#define DA9210_BUCK_GPI_GPIO3 0x04
|
||||
#define DA9210_BUCK_GPI_GPIO4 0x06
|
||||
#define DA9210_BUCK_PD_DIS 0x08
|
||||
#define DA9210_VBUCK_SEL 0x10
|
||||
#define DA9210_VBUCK_SEL_A 0x00
|
||||
#define DA9210_VBUCK_SEL_B 0x10
|
||||
#define DA9210_VBUCK_GPI_SHIFT 5
|
||||
#define DA9210_VBUCK_GPI_MASK 0x60
|
||||
#define DA9210_VBUCK_GPI_OFF 0x00
|
||||
#define DA9210_VBUCK_GPI_GPIO0 0x20
|
||||
#define DA9210_VBUCK_GPI_GPIO3 0x40
|
||||
#define DA9210_VBUCK_GPI_GPIO4 0x60
|
||||
#define DA9210_DVC_CTRL_EN 0x80
|
||||
|
||||
/* DA9210_REG_BUCK_ILIM (addr=0xD0) */
|
||||
#define DA9210_BUCK_ILIM_SHIFT 0
|
||||
#define DA9210_BUCK_ILIM_MASK 0x0F
|
||||
#define DA9210_BUCK_IALARM 0x10
|
||||
|
||||
/* DA9210_REG_BUCK_CONF1 (addr=0xD1) */
|
||||
#define DA9210_BUCK_MODE_SHIFT 0
|
||||
#define DA9210_BUCK_MODE_MASK 0x03
|
||||
#define DA9210_BUCK_MODE_MANUAL 0x00
|
||||
#define DA9210_BUCK_MODE_SLEEP 0x01
|
||||
#define DA9210_BUCK_MODE_SYNC 0x02
|
||||
#define DA9210_BUCK_MODE_AUTO 0x03
|
||||
#define DA9210_STARTUP_CTRL_SHIFT 2
|
||||
#define DA9210_STARTUP_CTRL_MASK 0x1C
|
||||
#define DA9210_PWR_DOWN_CTRL_SHIFT 5
|
||||
#define DA9210_PWR_DOWN_CTRL_MASK 0xE0
|
||||
|
||||
/* DA9210_REG_BUCK_CONF2 (addr=0xD2) */
|
||||
#define DA9210_PHASE_SEL_SHIFT 0
|
||||
#define DA9210_PHASE_SEL_MASK 0x03
|
||||
#define DA9210_FREQ_SEL 0x40
|
||||
|
||||
/* DA9210_REG_BUCK_AUTO (addr=0xD4) */
|
||||
#define DA9210_VBUCK_AUTO_SHIFT 0
|
||||
#define DA9210_VBUCK_AUTO_MASK 0x7F
|
||||
|
||||
/* DA9210_REG_BUCK_BASE (addr=0xD5) */
|
||||
#define DA9210_VBUCK_BASE_SHIFT 0
|
||||
#define DA9210_VBUCK_BASE_MASK 0x7F
|
||||
|
||||
/* DA9210_REG_VBUCK_MAX_DVC_IF (addr=0xD6) */
|
||||
#define DA9210_VBUCK_MAX_SHIFT 0
|
||||
#define DA9210_VBUCK_MAX_MASK 0x7F
|
||||
#define DA9210_DVC_STEP_SIZE 0x80
|
||||
#define DA9210_DVC_STEP_SIZE_10MV 0x00
|
||||
#define DA9210_DVC_STEP_SIZE_20MV 0x80
|
||||
|
||||
/* DA9210_REG_VBUCK_DVC (addr=0xD7) */
|
||||
#define DA9210_VBUCK_DVC_SHIFT 0
|
||||
#define DA9210_VBUCK_DVC_MASK 0x7F
|
||||
|
||||
/* DA9210_REG_VBUCK_A/B (addr=0xD8/0xD9) */
|
||||
#define DA9210_VBUCK_SHIFT 0
|
||||
#define DA9210_VBUCK_MASK 0x7F
|
||||
#define DA9210_VBUCK_BIAS 0
|
||||
#define DA9210_BUCK_SL 0x80
|
||||
|
||||
/* DA9210_REG_INTERFACE (addr=0x105) */
|
||||
#define DA9210_IF_BASE_ADDR_SHIFT 4
|
||||
#define DA9210_IF_BASE_ADDR_MASK 0xF0
|
||||
|
||||
/* DA9210_REG_CONFIG_E (addr=0x147) */
|
||||
#define DA9210_STAND_ALONE 0x01
|
||||
|
||||
#endif /* __DA9210_REGISTERS_H__ */
|
||||
|
||||
Loading…
Reference in New Issue