regulator: Add TPS65090 regulator driver
Add TPS65090 regulator driver TPS65090 PMIC from TI consists of 3 step down converters, 2 always on LDOs and 7 current limited load switches. The output voltages are ON/OFF controllable and are meant to supply power to the components on target board. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Venu Byravarasu
Mark Brown
parent
4dbd8f63f0
commit
452534e507
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@ -294,6 +294,13 @@ config REGULATOR_TPS6507X
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three step-down converters and two general-purpose LDO voltage regulators.
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It supports TI's software based Class-2 SmartReflex implementation.
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config REGULATOR_TPS65090
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tristate "TI TPS65090 Power regulator"
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depends on MFD_TPS65090
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help
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This driver provides support for the voltage regulators on the
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TI TPS65090 PMIC.
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config REGULATOR_TPS65217
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tristate "TI TPS65217 Power regulators"
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depends on MFD_TPS65217
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@ -40,6 +40,7 @@ obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
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obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
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obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
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@ -0,0 +1,197 @@
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/*
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* Regulator driver for tps65090 power management chip.
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*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/slab.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/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/mfd/tps65090.h>
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#include <linux/regulator/tps65090-regulator.h>
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struct tps65090_regulator {
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int id;
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/* Regulator register address.*/
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u8 reg_en_reg;
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u8 en_bit;
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/* used by regulator core */
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struct regulator_desc desc;
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/* Device */
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struct device *dev;
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};
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static inline struct device *to_tps65090_dev(struct regulator_dev *rdev)
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{
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return rdev_get_dev(rdev)->parent->parent;
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}
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static int tps65090_reg_is_enabled(struct regulator_dev *rdev)
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{
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struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps65090_dev(rdev);
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uint8_t control;
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int ret;
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ret = tps65090_read(parent, ri->reg_en_reg, &control);
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if (ret < 0) {
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dev_err(&rdev->dev, "Error in reading reg 0x%x\n",
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ri->reg_en_reg);
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return ret;
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}
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return (((control >> ri->en_bit) & 1) == 1);
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}
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static int tps65090_reg_enable(struct regulator_dev *rdev)
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{
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struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps65090_dev(rdev);
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int ret;
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ret = tps65090_set_bits(parent, ri->reg_en_reg, ri->en_bit);
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if (ret < 0)
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dev_err(&rdev->dev, "Error in updating reg 0x%x\n",
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ri->reg_en_reg);
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return ret;
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}
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static int tps65090_reg_disable(struct regulator_dev *rdev)
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{
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struct tps65090_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps65090_dev(rdev);
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int ret;
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ret = tps65090_clr_bits(parent, ri->reg_en_reg, ri->en_bit);
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if (ret < 0)
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dev_err(&rdev->dev, "Error in updating reg 0x%x\n",
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ri->reg_en_reg);
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return ret;
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}
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static struct regulator_ops tps65090_ops = {
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.enable = tps65090_reg_enable,
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.disable = tps65090_reg_disable,
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.is_enabled = tps65090_reg_is_enabled,
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};
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#define tps65090_REG(_id, _en_reg, _en_bit, _ops) \
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{ \
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.reg_en_reg = _en_reg, \
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.en_bit = _en_bit, \
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.id = TPS65090_ID_##_id, \
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.desc = { \
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.name = tps65090_rails(_id), \
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.id = TPS65090_ID_##_id, \
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.ops = &_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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}, \
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}
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static struct tps65090_regulator TPS65090_regulator[] = {
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tps65090_REG(DCDC1, 12, 0, tps65090_ops),
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tps65090_REG(DCDC2, 13, 0, tps65090_ops),
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tps65090_REG(DCDC3, 14, 0, tps65090_ops),
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tps65090_REG(FET1, 15, 0, tps65090_ops),
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tps65090_REG(FET2, 16, 0, tps65090_ops),
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tps65090_REG(FET3, 17, 0, tps65090_ops),
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tps65090_REG(FET4, 18, 0, tps65090_ops),
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tps65090_REG(FET5, 19, 0, tps65090_ops),
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tps65090_REG(FET6, 20, 0, tps65090_ops),
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tps65090_REG(FET7, 21, 0, tps65090_ops),
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};
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static inline struct tps65090_regulator *find_regulator_info(int id)
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{
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struct tps65090_regulator *ri;
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int i;
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for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) {
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ri = &TPS65090_regulator[i];
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if (ri->desc.id == id)
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return ri;
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}
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return NULL;
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}
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static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
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{
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struct tps65090_regulator *ri = NULL;
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struct regulator_dev *rdev;
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struct tps65090_regulator_platform_data *tps_pdata;
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int id = pdev->id;
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dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
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ri = find_regulator_info(id);
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if (ri == NULL) {
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dev_err(&pdev->dev, "invalid regulator ID specified\n");
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return -EINVAL;
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}
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tps_pdata = pdev->dev.platform_data;
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ri->dev = &pdev->dev;
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rdev = regulator_register(&ri->desc, &pdev->dev,
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&tps_pdata->regulator, ri, NULL);
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if (IS_ERR_OR_NULL(rdev)) {
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dev_err(&pdev->dev, "failed to register regulator %s\n",
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ri->desc.name);
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return PTR_ERR(rdev);
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}
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platform_set_drvdata(pdev, rdev);
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return 0;
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}
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static int __devexit tps65090_regulator_remove(struct platform_device *pdev)
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{
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struct regulator_dev *rdev = platform_get_drvdata(pdev);
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regulator_unregister(rdev);
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return 0;
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}
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static struct platform_driver tps65090_regulator_driver = {
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.driver = {
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.name = "tps65090-regulator",
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.owner = THIS_MODULE,
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},
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.probe = tps65090_regulator_probe,
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.remove = __devexit_p(tps65090_regulator_remove),
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};
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static int __init tps65090_regulator_init(void)
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{
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return platform_driver_register(&tps65090_regulator_driver);
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}
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subsys_initcall(tps65090_regulator_init);
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static void __exit tps65090_regulator_exit(void)
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{
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platform_driver_unregister(&tps65090_regulator_driver);
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}
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module_exit(tps65090_regulator_exit);
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MODULE_DESCRIPTION("tps65090 regulator driver");
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MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
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MODULE_LICENSE("GPL v2");
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@ -0,0 +1,50 @@
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/*
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* Regulator driver interface for TI TPS65090 PMIC family
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*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __REGULATOR_TPS65090_H
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#define __REGULATOR_TPS65090_H
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#include <linux/regulator/machine.h>
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#define tps65090_rails(_name) "tps65090_"#_name
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enum {
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TPS65090_ID_DCDC1,
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TPS65090_ID_DCDC2,
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TPS65090_ID_DCDC3,
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TPS65090_ID_FET1,
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TPS65090_ID_FET2,
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TPS65090_ID_FET3,
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TPS65090_ID_FET4,
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TPS65090_ID_FET5,
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TPS65090_ID_FET6,
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TPS65090_ID_FET7,
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};
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/*
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* struct tps65090_regulator_platform_data
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*
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* @regulator: The regulator init data.
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* @slew_rate_uV_per_us: Slew rate microvolt per microsec.
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*/
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struct tps65090_regulator_platform_data {
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struct regulator_init_data regulator;
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};
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#endif /* __REGULATOR_TPS65090_H */
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