forked from Minki/linux
regulator: Add ROHM BD9571MWV-M PMIC regulator driver
Add driver for the regulator block in the ROHM BD9571MWV-W MFD PMIC. This block supports three voltage monitors, VD18, VD25, VD33 for the 1V8, 2V5, 3V3 voltage rails and a single voltage regulator for the DVFS rail. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Marek Vasut
Mark Brown
parent
c1ae3cfa0e
commit
e85c5a153f
@ -163,6 +163,17 @@ config REGULATOR_BCM590XX
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BCM590xx PMUs. This will enable support for the software
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controllable LDO/Switching regulators.
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config REGULATOR_BD9571MWV
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tristate "ROHM BD9571MWV Regulators"
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depends on MFD_BD9571MWV
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help
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This driver provides support for the voltage regulators on the
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ROHM BD9571MWV PMIC. This will enable support for the software
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controllable regulator and voltage sampling units.
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This driver can also be built as a module. If so, the module
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will be called bd9571mwv-regulator.
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config REGULATOR_CPCAP
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tristate "Motorola CPCAP regulator"
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depends on MFD_CPCAP
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@ -24,6 +24,7 @@ obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
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obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o
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obj-$(CONFIG_REGULATOR_AXP20X) += axp20x-regulator.o
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obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o
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obj-$(CONFIG_REGULATOR_BD9571MWV) += bd9571mwv-regulator.o
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obj-$(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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178
drivers/regulator/bd9571mwv-regulator.c
Normal file
178
drivers/regulator/bd9571mwv-regulator.c
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@ -0,0 +1,178 @@
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/*
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* ROHM BD9571MWV-M regulator driver
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*
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* Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.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 TPS65086 driver
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*
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* NOTE: VD09 is missing
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*/
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#include <linux/module.h>
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#include <linux/of.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/bd9571mwv.h>
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enum bd9571mwv_regulators { VD09, VD18, VD25, VD33, DVFS };
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#define BD9571MWV_REG(_name, _of, _id, _ops, _vr, _vm, _nv, _min, _step, _lmin)\
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{ \
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.name = _name, \
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.of_match = of_match_ptr(_of), \
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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 = _nv, \
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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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.min_uV = _min, \
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.uV_step = _step, \
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.linear_min_sel = _lmin, \
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}
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int bd9571mwv_avs_get_moni_state(struct regulator_dev *rdev)
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{
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unsigned int val;
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int ret;
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ret = regmap_read(rdev->regmap, BD9571MWV_AVS_SET_MONI, &val);
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if (ret != 0)
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return ret;
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return val & BD9571MWV_AVS_SET_MONI_MASK;
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}
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int bd9571mwv_avs_set_voltage_sel_regmap(struct regulator_dev *rdev,
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unsigned int sel)
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{
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int ret;
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ret = bd9571mwv_avs_get_moni_state(rdev);
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if (ret < 0)
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return ret;
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return regmap_write_bits(rdev->regmap, BD9571MWV_AVS_VD09_VID(ret),
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rdev->desc->vsel_mask, sel);
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}
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int bd9571mwv_avs_get_voltage_sel_regmap(struct regulator_dev *rdev)
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{
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unsigned int val;
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int ret;
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ret = bd9571mwv_avs_get_moni_state(rdev);
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if (ret < 0)
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return ret;
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ret = regmap_read(rdev->regmap, BD9571MWV_AVS_VD09_VID(ret), &val);
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if (ret != 0)
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return ret;
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val &= rdev->desc->vsel_mask;
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val >>= ffs(rdev->desc->vsel_mask) - 1;
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return val;
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}
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int bd9571mwv_reg_set_voltage_sel_regmap(struct regulator_dev *rdev,
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unsigned int sel)
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{
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return regmap_write_bits(rdev->regmap, BD9571MWV_DVFS_SETVID,
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rdev->desc->vsel_mask, sel);
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}
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/* Operations permitted on AVS voltage regulator */
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static struct regulator_ops avs_ops = {
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.set_voltage_sel = bd9571mwv_avs_set_voltage_sel_regmap,
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.map_voltage = regulator_map_voltage_linear,
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.get_voltage_sel = bd9571mwv_avs_get_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear,
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};
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/* Operations permitted on voltage regulators */
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static struct regulator_ops reg_ops = {
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.set_voltage_sel = bd9571mwv_reg_set_voltage_sel_regmap,
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.map_voltage = regulator_map_voltage_linear,
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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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};
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/* Operations permitted on voltage monitors */
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static struct regulator_ops vid_ops = {
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.map_voltage = regulator_map_voltage_linear,
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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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};
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static struct regulator_desc regulators[] = {
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BD9571MWV_REG("VD09", "vd09", VD09, avs_ops, 0, 0x7f,
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0x80, 600000, 10000, 0x3c),
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BD9571MWV_REG("VD18", "vd18", VD18, vid_ops, BD9571MWV_VD18_VID, 0xf,
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16, 1625000, 25000, 0),
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BD9571MWV_REG("VD25", "vd25", VD25, vid_ops, BD9571MWV_VD25_VID, 0xf,
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16, 2150000, 50000, 0),
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BD9571MWV_REG("VD33", "vd33", VD33, vid_ops, BD9571MWV_VD33_VID, 0xf,
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11, 2800000, 100000, 0),
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BD9571MWV_REG("DVFS", "dvfs", DVFS, reg_ops,
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BD9571MWV_DVFS_MONIVDAC, 0x7f,
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0x80, 600000, 10000, 0x3c),
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};
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static int bd9571mwv_regulator_probe(struct platform_device *pdev)
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{
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struct bd9571mwv *bd = 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, bd);
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config.dev = &pdev->dev;
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config.dev->of_node = bd->dev->of_node;
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config.driver_data = bd;
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config.regmap = bd->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(bd->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 bd9571mwv_regulator_id_table[] = {
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{ "bd9571mwv-regulator", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, bd9571mwv_regulator_id_table);
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static struct platform_driver bd9571mwv_regulator_driver = {
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.driver = {
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.name = "bd9571mwv-regulator",
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},
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.probe = bd9571mwv_regulator_probe,
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.id_table = bd9571mwv_regulator_id_table,
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};
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module_platform_driver(bd9571mwv_regulator_driver);
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MODULE_AUTHOR("Marek Vasut <marek.vasut+renesas@gmail.com>");
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MODULE_DESCRIPTION("BD9571MWV Regulator driver");
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MODULE_LICENSE("GPL v2");
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