regulator: tps65217: Add tps65217 regulator driver
This patch adds tps65217 PMIC as a regulator The regulator module consists of 3 DCDCs and 4 LDOs. The output voltages are configurable and are meant to supply power to the main processor and other components Signed-off-by: AnilKumar Ch <anilkumar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>5bit-waveforms
AnilKumar Ch
Mark Brown
parent
62aa492582
commit
a493077f18
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@ -275,6 +275,15 @@ 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_TPS65217
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tristate "TI TPS65217 Power regulators"
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depends on MFD_TPS65217
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help
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This driver supports TPS65217 voltage regulator chips. TPS65217
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provides three step-down converters and four general-purpose LDO
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voltage regulators. It supports software based voltage control
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for different voltage domains
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config REGULATOR_TPS65912
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tristate "TI TPS65912 Power regulator"
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depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
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@ -40,6 +40,7 @@ obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
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obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-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-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
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obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
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@ -0,0 +1,493 @@
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/*
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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 - http://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/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, _ops, _n) \
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{ \
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.name = _name, \
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.id = _id, \
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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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} \
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#define TPS65217_INFO(_nm, _min, _max, _f1, _f2, _t, _n, _em, _vr, _vm) \
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{ \
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.name = _nm, \
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.min_uV = _min, \
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.max_uV = _max, \
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.vsel_to_uv = _f1, \
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.uv_to_vsel = _f2, \
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.table = _t, \
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.table_len = _n, \
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.enable_mask = _em, \
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.set_vout_reg = _vr, \
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.set_vout_mask = _vm, \
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}
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static const 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 int tps65217_vsel_to_uv1(unsigned int vsel)
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{
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int uV = 0;
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if (vsel > 63)
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return -EINVAL;
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if (vsel <= 24)
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uV = vsel * 25000 + 900000;
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else if (vsel <= 52)
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uV = (vsel - 24) * 50000 + 1500000;
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else if (vsel < 56)
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uV = (vsel - 52) * 100000 + 2900000;
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else
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uV = 3300000;
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return uV;
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}
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static int tps65217_uv_to_vsel1(int uV, unsigned int *vsel)
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{
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if ((uV < 0) && (uV > 3300000))
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return -EINVAL;
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if (uV <= 1500000)
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*vsel = (uV - 875001) / 25000;
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else if (uV <= 2900000)
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*vsel = 24 + (uV - 1450001) / 50000;
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else if (uV < 3300000)
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*vsel = 52 + (uV - 2800001) / 100000;
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else
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*vsel = 56;
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return 0;
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}
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static int tps65217_vsel_to_uv2(unsigned int vsel)
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{
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int uV = 0;
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if (vsel > 31)
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return -EINVAL;
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if (vsel <= 8)
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uV = vsel * 50000 + 1500000;
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else if (vsel <= 13)
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uV = (vsel - 8) * 100000 + 1900000;
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else
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uV = (vsel - 13) * 50000 + 2400000;
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return uV;
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}
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static int tps65217_uv_to_vsel2(int uV, unsigned int *vsel)
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{
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if ((uV < 0) && (uV > 3300000))
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return -EINVAL;
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if (uV <= 1900000)
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*vsel = (uV - 1450001) / 50000;
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else if (uV <= 2400000)
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*vsel = 8 + (uV - 1800001) / 100000;
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else
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*vsel = 13 + (uV - 2350001) / 50000;
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return 0;
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}
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static struct tps_info tps65217_pmic_regs[] = {
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TPS65217_INFO("DCDC1", 900000, 1800000, tps65217_vsel_to_uv1,
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tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC1_EN,
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TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK),
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TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1,
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tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC2_EN,
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TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK),
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TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1,
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tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC3_EN,
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TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK),
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TPS65217_INFO("LDO1", 1000000, 3300000, NULL, NULL, LDO1_VSEL_table,
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16, TPS65217_ENABLE_LDO1_EN, TPS65217_REG_DEFLDO1,
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TPS65217_DEFLDO1_LDO1_MASK),
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TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1,
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tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_LDO2_EN,
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TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK),
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TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2,
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tps65217_uv_to_vsel2, NULL, 32,
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TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
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TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK),
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TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2,
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tps65217_uv_to_vsel2, NULL, 32,
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TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
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TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK),
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};
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static int tps65217_pmic_dcdc_is_enabled(struct regulator_dev *dev)
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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 data, dcdc = rdev_get_id(dev);
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if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
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return -EINVAL;
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ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);
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if (ret)
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return ret;
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return (data & tps->info[dcdc]->enable_mask) ? 1 : 0;
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}
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static int tps65217_pmic_ldo_is_enabled(struct regulator_dev *dev)
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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 data, ldo = rdev_get_id(dev);
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if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
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return -EINVAL;
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ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);
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if (ret)
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return ret;
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return (data & tps->info[ldo]->enable_mask) ? 1 : 0;
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}
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static int tps65217_pmic_dcdc_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 dcdc = rdev_get_id(dev);
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if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
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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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tps->info[dcdc]->enable_mask,
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tps->info[dcdc]->enable_mask,
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TPS65217_PROTECT_L1);
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}
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static int tps65217_pmic_dcdc_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 dcdc = rdev_get_id(dev);
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if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
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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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tps->info[dcdc]->enable_mask, TPS65217_PROTECT_L1);
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}
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static int tps65217_pmic_ldo_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 ldo = rdev_get_id(dev);
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if (ldo < TPS65217_LDO_1 || ldo > 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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tps->info[ldo]->enable_mask,
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tps->info[ldo]->enable_mask,
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TPS65217_PROTECT_L1);
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}
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static int tps65217_pmic_ldo_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 ldo = rdev_get_id(dev);
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if (ldo < TPS65217_LDO_1 || ldo > 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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tps->info[ldo]->enable_mask, TPS65217_PROTECT_L1);
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}
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static int tps65217_pmic_dcdc_get_voltage_sel(struct regulator_dev *dev)
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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 selector, dcdc = rdev_get_id(dev);
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if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
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return -EINVAL;
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ret = tps65217_reg_read(tps, tps->info[dcdc]->set_vout_reg, &selector);
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if (ret)
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return ret;
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selector &= tps->info[dcdc]->set_vout_mask;
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return selector;
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}
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static int tps65217_pmic_dcdc_set_voltage(struct regulator_dev *dev,
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int min_uV, int max_uV, 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 dcdc = rdev_get_id(dev);
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if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
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return -EINVAL;
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if (min_uV < tps->info[dcdc]->min_uV
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|| min_uV > tps->info[dcdc]->max_uV)
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return -EINVAL;
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if (max_uV < tps->info[dcdc]->min_uV
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|| max_uV > tps->info[dcdc]->max_uV)
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return -EINVAL;
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ret = tps->info[dcdc]->uv_to_vsel(min_uV, selector);
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if (ret)
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return ret;
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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, tps->info[dcdc]->set_vout_reg,
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tps->info[dcdc]->set_vout_mask,
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*selector, TPS65217_PROTECT_L2);
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if (ret)
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return ret;
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/* Set GO bit to initiate voltage transistion */
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return 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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}
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static int tps65217_pmic_ldo_get_voltage_sel(struct regulator_dev *dev)
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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 selector, ldo = rdev_get_id(dev);
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if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
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return -EINVAL;
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ret = tps65217_reg_read(tps, tps->info[ldo]->set_vout_reg, &selector);
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if (ret)
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return ret;
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selector &= tps->info[ldo]->set_vout_mask;
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return selector;
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}
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static int tps65217_pmic_ldo_set_voltage_sel(struct regulator_dev *dev,
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unsigned selector)
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{
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struct tps65217 *tps = rdev_get_drvdata(dev);
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int ldo = rdev_get_id(dev);
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if (ldo != TPS65217_LDO_1)
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return -EINVAL;
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if (selector >= tps->info[ldo]->table_len)
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return -EINVAL;
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/* Set the voltage based on vsel value and write protect level is 2 */
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return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,
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tps->info[ldo]->set_vout_mask,
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selector, TPS65217_PROTECT_L2);
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}
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static int tps65217_pmic_ldo_set_voltage(struct regulator_dev *dev,
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int min_uV, int max_uV, 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 ldo = rdev_get_id(dev);
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if (ldo < TPS65217_LDO_2 || ldo > TPS65217_LDO_4)
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return -EINVAL;
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if (min_uV < tps->info[ldo]->min_uV
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|| min_uV > tps->info[ldo]->max_uV)
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return -EINVAL;
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if (max_uV < tps->info[ldo]->min_uV
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|| max_uV > tps->info[ldo]->max_uV)
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return -EINVAL;
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ret = tps->info[ldo]->uv_to_vsel(min_uV, selector);
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if (ret)
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return ret;
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/* Set the voltage based on vsel value and write protect level is 2 */
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return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,
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tps->info[ldo]->set_vout_mask,
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*selector, TPS65217_PROTECT_L2);
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}
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static int tps65217_pmic_dcdc_list_voltage(struct regulator_dev *dev,
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unsigned selector)
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{
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struct tps65217 *tps = rdev_get_drvdata(dev);
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unsigned int dcdc = rdev_get_id(dev);
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if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
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return -EINVAL;
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if (selector >= tps->info[dcdc]->table_len)
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return -EINVAL;
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return tps->info[dcdc]->vsel_to_uv(selector);
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}
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static int tps65217_pmic_ldo_list_voltage(struct regulator_dev *dev,
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unsigned selector)
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{
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struct tps65217 *tps = rdev_get_drvdata(dev);
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unsigned int ldo = rdev_get_id(dev);
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if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
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return -EINVAL;
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if (selector >= tps->info[ldo]->table_len)
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return -EINVAL;
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if (tps->info[ldo]->table)
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return tps->info[ldo]->table[selector];
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return tps->info[ldo]->vsel_to_uv(selector);
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}
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||||
/* Operations permitted on DCDCx */
|
||||
static struct regulator_ops tps65217_pmic_dcdc_ops = {
|
||||
.is_enabled = tps65217_pmic_dcdc_is_enabled,
|
||||
.enable = tps65217_pmic_dcdc_enable,
|
||||
.disable = tps65217_pmic_dcdc_disable,
|
||||
.get_voltage_sel = tps65217_pmic_dcdc_get_voltage_sel,
|
||||
.set_voltage = tps65217_pmic_dcdc_set_voltage,
|
||||
.list_voltage = tps65217_pmic_dcdc_list_voltage,
|
||||
};
|
||||
|
||||
/* Operations permitted on LDO1 */
|
||||
static struct regulator_ops tps65217_pmic_ldo1_ops = {
|
||||
.is_enabled = tps65217_pmic_ldo_is_enabled,
|
||||
.enable = tps65217_pmic_ldo_enable,
|
||||
.disable = tps65217_pmic_ldo_disable,
|
||||
.get_voltage_sel = tps65217_pmic_ldo_get_voltage_sel,
|
||||
.set_voltage_sel = tps65217_pmic_ldo_set_voltage_sel,
|
||||
.list_voltage = tps65217_pmic_ldo_list_voltage,
|
||||
};
|
||||
|
||||
/* Operations permitted on LDO2, LDO3 and LDO4 */
|
||||
static struct regulator_ops tps65217_pmic_ldo234_ops = {
|
||||
.is_enabled = tps65217_pmic_ldo_is_enabled,
|
||||
.enable = tps65217_pmic_ldo_enable,
|
||||
.disable = tps65217_pmic_ldo_disable,
|
||||
.get_voltage_sel = tps65217_pmic_ldo_get_voltage_sel,
|
||||
.set_voltage = tps65217_pmic_ldo_set_voltage,
|
||||
.list_voltage = tps65217_pmic_ldo_list_voltage,
|
||||
};
|
||||
|
||||
static struct regulator_desc regulators[] = {
|
||||
TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1,
|
||||
tps65217_pmic_dcdc_ops, 64),
|
||||
TPS65217_REGULATOR("DCDC2",TPS65217_DCDC_2,
|
||||
tps65217_pmic_dcdc_ops, 64),
|
||||
TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3,
|
||||
tps65217_pmic_dcdc_ops, 64),
|
||||
TPS65217_REGULATOR("LDO1", TPS65217_LDO_1,
|
||||
tps65217_pmic_ldo1_ops, 16),
|
||||
TPS65217_REGULATOR("LDO2", TPS65217_LDO_2,
|
||||
tps65217_pmic_ldo234_ops, 64),
|
||||
TPS65217_REGULATOR("LDO3", TPS65217_LDO_3,
|
||||
tps65217_pmic_ldo234_ops, 32),
|
||||
TPS65217_REGULATOR("LDO4", TPS65217_LDO_4,
|
||||
tps65217_pmic_ldo234_ops, 32),
|
||||
};
|
||||
|
||||
static int __devinit tps65217_regulator_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct regulator_dev *rdev;
|
||||
struct tps65217 *tps;
|
||||
struct tps_info *info = &tps65217_pmic_regs[pdev->id];
|
||||
|
||||
/* Already set by core driver */
|
||||
tps = dev_to_tps65217(pdev->dev.parent);
|
||||
tps->info[pdev->id] = info;
|
||||
|
||||
rdev = regulator_register(®ulators[pdev->id], &pdev->dev,
|
||||
pdev->dev.platform_data, tps);
|
||||
if (IS_ERR(rdev))
|
||||
return PTR_ERR(rdev);
|
||||
|
||||
platform_set_drvdata(pdev, rdev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devexit tps65217_regulator_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct regulator_dev *rdev = platform_get_drvdata(pdev);
|
||||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
regulator_unregister(rdev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver tps65217_regulator_driver = {
|
||||
.driver = {
|
||||
.name = "tps65217-pmic",
|
||||
},
|
||||
.probe = tps65217_regulator_probe,
|
||||
.remove = __devexit_p(tps65217_regulator_remove),
|
||||
};
|
||||
|
||||
static int __init tps65217_regulator_init(void)
|
||||
{
|
||||
return platform_driver_register(&tps65217_regulator_driver);
|
||||
}
|
||||
subsys_initcall(tps65217_regulator_init);
|
||||
|
||||
static void __exit tps65217_regulator_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&tps65217_regulator_driver);
|
||||
}
|
||||
module_exit(tps65217_regulator_exit);
|
||||
|
||||
|
||||
MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
|
||||
MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
|
||||
MODULE_ALIAS("platform:tps65217-pmic");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue