TPS65910: Add tps65910 regulator driver

The regulator module consists of 3 DCDCs and 8 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components

Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

3 files changed, 712 insertions, 0 deletions

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f0b13a0d185..d7ed20f293d 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -297,5 +297,11 @@ config REGULATOR_TPS6524X
           serial interface currently supported on the sequencer serial
           port controller.
 
+config REGULATOR_TPS65910
+        tristate "TI TPS65910 Power Regulator"
+        depends on MFD_TPS65910
+        help
+          This driver supports TPS65910 voltage regulator chips.
+
 endif
 
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 165ff5371e9..3932d2ec38f 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -42,5 +42,6 @@ obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
 obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
 obj-$(CONFIG_REGULATOR_AB8500)  += ab8500.o
 obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
+obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
 
 ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
new file mode 100644
index 00000000000..d461fa7906b
--- /dev/null
+++ b/drivers/regulator/tps65910-regulator.c
@@ -0,0 +1,705 @@
+/*
+ * tps65910.c  --  TI tps65910
+ *
+ * Copyright 2010 Texas Instruments Inc.
+ *
+ * Author: Graeme Gregory <gg@slimlogic.co.uk>
+ * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under  the terms of the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/mfd/tps65910.h>
+
+#define TPS65910_REG_VRTC               0
+#define TPS65910_REG_VIO                1
+#define TPS65910_REG_VDD1               2
+#define TPS65910_REG_VDD2               3
+#define TPS65910_REG_VDD3               4
+#define TPS65910_REG_VDIG1              5
+#define TPS65910_REG_VDIG2              6
+#define TPS65910_REG_VPLL               7
+#define TPS65910_REG_VDAC               8
+#define TPS65910_REG_VAUX1              9
+#define TPS65910_REG_VAUX2              10
+#define TPS65910_REG_VAUX33             11
+#define TPS65910_REG_VMMC               12
+
+#define TPS65910_NUM_REGULATOR          13
+
+#define TPS65910_SUPPLY_STATE_ENABLED   0x1
+
+/* supported VIO voltages in milivolts */
+static const u16 VIO_VSEL_table[] = {
+        1500, 1800, 2500, 3300,
+};
+
+/* supported VIO voltages in milivolts */
+static const u16 VDD3_VSEL_table[] = {
+        5000,
+};
+
+/* supported VDIG1 voltages in milivolts */
+static const u16 VDIG1_VSEL_table[] = {
+        1200, 1500, 1800, 2700,
+};
+
+/* supported VDIG2 voltages in milivolts */
+static const u16 VDIG2_VSEL_table[] = {
+        1000, 1100, 1200, 1800,
+};
+
+/* supported VPLL voltages in milivolts */
+static const u16 VPLL_VSEL_table[] = {
+        1000, 1100, 1800, 2500,
+};
+
+/* supported VDAC voltages in milivolts */
+static const u16 VDAC_VSEL_table[] = {
+        1800, 2600, 2800, 2850,
+};
+
+/* supported VAUX1 voltages in milivolts */
+static const u16 VAUX1_VSEL_table[] = {
+        1800, 2500, 2800, 2850,
+};
+
+/* supported VAUX2 voltages in milivolts */
+static const u16 VAUX2_VSEL_table[] = {
+        1800, 2800, 2900, 3300,
+};
+
+/* supported VAUX33 voltages in milivolts */
+static const u16 VAUX33_VSEL_table[] = {
+        1800, 2000, 2800, 3300,
+};
+
+/* supported VMMC voltages in milivolts */
+static const u16 VMMC_VSEL_table[] = {
+        1800, 2800, 3000, 3300,
+};
+
+struct tps_info {
+        const char *name;
+        unsigned min_uV;
+        unsigned max_uV;
+        u8 table_len;
+        const u16 *table;
+};
+
+static struct tps_info tps65910_regs[] = {
+        {
+                .name = "VRTC",
+        },
+        {
+                .name = "VIO",
+                .min_uV = 1500000,
+                .max_uV = 3300000,
+                .table_len = ARRAY_SIZE(VIO_VSEL_table),
+                .table = VIO_VSEL_table,
+        },
+        {
+                .name = "VDD1",
+                .min_uV = 600000,
+                .max_uV = 4500000,
+        },
+        {
+                .name = "VDD2",
+                .min_uV = 600000,
+                .max_uV = 4500000,
+        },
+        {
+                .name = "VDD3",
+                .min_uV = 5000000,
+                .max_uV = 5000000,
+                .table_len = ARRAY_SIZE(VDD3_VSEL_table),
+                .table = VDD3_VSEL_table,
+        },
+        {
+                .name = "VDIG1",
+                .min_uV = 1200000,
+                .max_uV = 2700000,
+                .table_len = ARRAY_SIZE(VDIG1_VSEL_table),
+                .table = VDIG1_VSEL_table,
+        },
+        {
+                .name = "VDIG2",
+                .min_uV = 1000000,
+                .max_uV = 1800000,
+                .table_len = ARRAY_SIZE(VDIG2_VSEL_table),
+                .table = VDIG2_VSEL_table,
+        },
+        {
+                .name = "VPLL",
+                .min_uV = 1000000,
+                .max_uV = 2500000,
+                .table_len = ARRAY_SIZE(VPLL_VSEL_table),
+                .table = VPLL_VSEL_table,
+        },
+        {
+                .name = "VDAC",
+                .min_uV = 1800000,
+                .max_uV = 2850000,
+                .table_len = ARRAY_SIZE(VDAC_VSEL_table),
+                .table = VDAC_VSEL_table,
+        },
+        {
+                .name = "VAUX1",
+                .min_uV = 1800000,
+                .max_uV = 2850000,
+                .table_len = ARRAY_SIZE(VAUX1_VSEL_table),
+                .table = VAUX1_VSEL_table,
+        },
+        {
+                .name = "VAUX2",
+                .min_uV = 1800000,
+                .max_uV = 3300000,
+                .table_len = ARRAY_SIZE(VAUX2_VSEL_table),
+                .table = VAUX2_VSEL_table,
+        },
+        {
+                .name = "VAUX33",
+                .min_uV = 1800000,
+                .max_uV = 3300000,
+                .table_len = ARRAY_SIZE(VAUX33_VSEL_table),
+                .table = VAUX33_VSEL_table,
+        },
+        {
+                .name = "VMMC",
+                .min_uV = 1800000,
+                .max_uV = 3300000,
+                .table_len = ARRAY_SIZE(VMMC_VSEL_table),
+                .table = VMMC_VSEL_table,
+        },
+};
+
+struct tps65910_reg {
+        struct regulator_desc desc[TPS65910_NUM_REGULATOR];
+        struct tps65910 *mfd;
+        struct regulator_dev *rdev[TPS65910_NUM_REGULATOR];
+        struct tps_info *info[TPS65910_NUM_REGULATOR];
+        struct mutex mutex;
+        int mode;
+};
+
+static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
+{
+        u8 val;
+        int err;
+
+        err = pmic->mfd->read(pmic->mfd, reg, 1, &val);
+        if (err)
+                return err;
+
+        return val;
+}
+
+static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val)
+{
+        return pmic->mfd->write(pmic->mfd, reg, 1, &val);
+}
+
+static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
+                                        u8 set_mask, u8 clear_mask)
+{
+        int err, data;
+
+        mutex_lock(&pmic->mutex);
+
+        data = tps65910_read(pmic, reg);
+        if (data < 0) {
+                dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
+                err = data;
+                goto out;
+        }
+
+        data &= ~clear_mask;
+        data |= set_mask;
+        err = tps65910_write(pmic, reg, data);
+        if (err)
+                dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+        mutex_unlock(&pmic->mutex);
+        return err;
+}
+
+static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg)
+{
+        int data;
+
+        mutex_lock(&pmic->mutex);
+
+        data = tps65910_read(pmic, reg);
+        if (data < 0)
+                dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
+
+        mutex_unlock(&pmic->mutex);
+        return data;
+}
+
+static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val)
+{
+        int err;
+
+        mutex_lock(&pmic->mutex);
+
+        err = tps65910_write(pmic, reg, val);
+        if (err < 0)
+                dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
+
+        mutex_unlock(&pmic->mutex);
+        return err;
+}
+
+static int tps65910_get_ctrl_register(int id)
+{
+        switch (id) {
+        case TPS65910_REG_VRTC:
+                return TPS65910_VRTC;
+        case TPS65910_REG_VIO:
+                return TPS65910_VIO;
+        case TPS65910_REG_VDD1:
+                return TPS65910_VDD1;
+        case TPS65910_REG_VDD2:
+                return TPS65910_VDD2;
+        case TPS65910_REG_VDD3:
+                return TPS65910_VDD3;
+        case TPS65910_REG_VDIG1:
+                return TPS65910_VDIG1;
+        case TPS65910_REG_VDIG2:
+                return TPS65910_VDIG2;
+        case TPS65910_REG_VPLL:
+                return TPS65910_VPLL;
+        case TPS65910_REG_VDAC:
+                return TPS65910_VDAC;
+        case TPS65910_REG_VAUX1:
+                return TPS65910_VAUX1;
+        case TPS65910_REG_VAUX2:
+                return TPS65910_VAUX2;
+        case TPS65910_REG_VAUX33:
+                return TPS65910_VAUX33;
+        case TPS65910_REG_VMMC:
+                return TPS65910_VMMC;
+        default:
+                return -EINVAL;
+        }
+}
+
+static int tps65910_is_enabled(struct regulator_dev *dev)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int reg, value, id = rdev_get_id(dev);
+
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        value = tps65910_reg_read(pmic, reg);
+        if (value < 0)
+                return value;
+
+        return value & TPS65910_SUPPLY_STATE_ENABLED;
+}
+
+static int tps65910_enable(struct regulator_dev *dev)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        struct tps65910 *mfd = pmic->mfd;
+        int reg, id = rdev_get_id(dev);
+
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        return tps65910_set_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
+}
+
+static int tps65910_disable(struct regulator_dev *dev)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        struct tps65910 *mfd = pmic->mfd;
+        int reg, id = rdev_get_id(dev);
+
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
+}
+
+
+static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        struct tps65910 *mfd = pmic->mfd;
+        int reg, value, id = rdev_get_id(dev);
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        switch (mode) {
+        case REGULATOR_MODE_NORMAL:
+                return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
+                                                        LDO_ST_MODE_BIT);
+        case REGULATOR_MODE_IDLE:
+                value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
+                return tps65910_set_bits(mfd, reg, value);
+        case REGULATOR_MODE_STANDBY:
+                return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT);
+        }
+
+        return -EINVAL;
+}
+
+static unsigned int tps65910_get_mode(struct regulator_dev *dev)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int reg, value, id = rdev_get_id(dev);
+
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        value = tps65910_reg_read(pmic, reg);
+        if (value < 0)
+                return value;
+
+        if (value & LDO_ST_ON_BIT)
+                return REGULATOR_MODE_STANDBY;
+        else if (value & LDO_ST_MODE_BIT)
+                return REGULATOR_MODE_IDLE;
+        else
+                return REGULATOR_MODE_NORMAL;
+}
+
+static int tps65910_get_voltage_dcdc(struct regulator_dev *dev)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int id = rdev_get_id(dev), voltage = 0;
+        int opvsel = 0, srvsel = 0, mult = 0, sr = 0;
+
+        switch (id) {
+        case TPS65910_REG_VDD1:
+                opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP);
+                mult = tps65910_reg_read(pmic, TPS65910_VDD1);
+                mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
+                srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR);
+                sr = opvsel & VDD1_OP_CMD_MASK;
+                opvsel &= VDD1_OP_SEL_MASK;
+                srvsel &= VDD1_SR_SEL_MASK;
+                break;
+        case TPS65910_REG_VDD2:
+                opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP);
+                mult = tps65910_reg_read(pmic, TPS65910_VDD2);
+                mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
+                srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR);
+                sr = opvsel & VDD2_OP_CMD_MASK;
+                opvsel &= VDD2_OP_SEL_MASK;
+                srvsel &= VDD2_SR_SEL_MASK;
+                break;
+        }
+
+        /* multiplier 0 == 1 but 2,3 normal */
+        if (!mult)
+                mult=1;
+
+        if (sr) {
+                /* Valid range is 3-75 so normalise */
+                if (srvsel < 3) srvsel = 3;
+                if (srvsel > 75) srvsel = 75;
+                srvsel -= 3;
+
+                voltage = (srvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100;
+        } else {
+
+                /* Valid range is 3-75 so normalise */
+                if (opvsel < 3) opvsel = 3;
+                if (opvsel > 75) opvsel = 75;
+                opvsel -= 3;
+
+                voltage = (opvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100;
+        }
+
+        voltage *= mult;
+
+        return voltage;
+}
+
+static int tps65910_get_voltage(struct regulator_dev *dev)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int reg, value, id = rdev_get_id(dev), voltage = 0;
+
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        value = tps65910_reg_read(pmic, reg);
+        if (value < 0)
+                return value;
+
+        switch (id) {
+        case TPS65910_REG_VIO:
+        case TPS65910_REG_VDIG1:
+        case TPS65910_REG_VDIG2:
+        case TPS65910_REG_VPLL:
+        case TPS65910_REG_VDAC:
+        case TPS65910_REG_VAUX1:
+        case TPS65910_REG_VAUX2:
+        case TPS65910_REG_VAUX33:
+        case TPS65910_REG_VMMC:
+                value &= LDO_SEL_MASK;
+                value >>= LDO_SEL_SHIFT;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        voltage = pmic->info[id]->table[value] * 1000;
+
+        return voltage;
+}
+
+static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
+{
+        return 5 * 1000 * 1000;
+}
+
+static int tps65910_set_voltage_dcdc(struct regulator_dev *dev,
+                                unsigned selector)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int id = rdev_get_id(dev), vsel;
+        int dcdc_mult;
+
+        /* Split vsel into appropriate registers */
+        dcdc_mult = (selector / VDD1_2_NUM_VOLTS) + 1;
+        if (dcdc_mult == 1) dcdc_mult--;
+
+        vsel = (selector % VDD1_2_NUM_VOLTS) + 3;
+
+        if (id == TPS65910_REG_VDD1) {
+                tps65910_modify_bits(pmic, TPS65910_VDD1,
+                                (dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
+                                                VDD1_VGAIN_SEL_MASK);
+                tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel);
+        } else {
+                tps65910_modify_bits(pmic, TPS65910_VDD2,
+                                (dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
+                                                VDD1_VGAIN_SEL_MASK);
+                tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel);
+        }
+
+        return 0;
+}
+
+static int tps65910_set_voltage(struct regulator_dev *dev, unsigned selector)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int reg, id = rdev_get_id(dev);
+
+        reg = tps65910_get_ctrl_register(id);
+        if (reg < 0)
+                return reg;
+
+        switch (id) {
+        case TPS65910_REG_VIO:
+        case TPS65910_REG_VDIG1:
+        case TPS65910_REG_VDIG2:
+        case TPS65910_REG_VPLL:
+        case TPS65910_REG_VDAC:
+        case TPS65910_REG_VAUX1:
+        case TPS65910_REG_VAUX2:
+        case TPS65910_REG_VAUX33:
+        case TPS65910_REG_VMMC:
+                return tps65910_modify_bits(pmic, reg,
+                                (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
+        }
+
+        return -EINVAL;
+}
+
+static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
+                                        unsigned selector)
+{
+        int mult, volt;
+
+        mult = (selector / VDD1_2_NUM_VOLTS) + 1;
+
+        volt = VDD1_2_MIN_VOLT + (selector % VDD1_2_NUM_VOLTS) * VDD1_2_OFFSET;
+
+        return  volt * 100 * mult;
+}
+
+static int tps65910_list_voltage(struct regulator_dev *dev,
+                                        unsigned selector)
+{
+        struct tps65910_reg *pmic = rdev_get_drvdata(dev);
+        int id = rdev_get_id(dev), voltage;
+
+        if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC)
+                return -EINVAL;
+
+        if (selector >= pmic->info[id]->table_len)
+                return -EINVAL;
+        else
+                voltage = pmic->info[id]->table[selector] * 1000;
+
+        return voltage;
+}
+
+/* Regulator ops (except VRTC) */
+static struct regulator_ops tps65910_ops_dcdc = {
+        .is_enabled             = tps65910_is_enabled,
+        .enable                 = tps65910_enable,
+        .disable                = tps65910_disable,
+        .set_mode               = tps65910_set_mode,
+        .get_mode               = tps65910_get_mode,
+        .get_voltage            = tps65910_get_voltage_dcdc,
+        .set_voltage_sel        = tps65910_set_voltage_dcdc,
+        .list_voltage           = tps65910_list_voltage_dcdc,
+};
+
+static struct regulator_ops tps65910_ops_vdd3 = {
+        .is_enabled             = tps65910_is_enabled,
+        .enable                 = tps65910_enable,
+        .disable                = tps65910_disable,
+        .set_mode               = tps65910_set_mode,
+        .get_mode               = tps65910_get_mode,
+        .get_voltage            = tps65910_get_voltage_vdd3,
+        .list_voltage           = tps65910_list_voltage,
+};
+
+static struct regulator_ops tps65910_ops = {
+        .is_enabled             = tps65910_is_enabled,
+        .enable                 = tps65910_enable,
+        .disable                = tps65910_disable,
+        .set_mode               = tps65910_set_mode,
+        .get_mode               = tps65910_get_mode,
+        .get_voltage            = tps65910_get_voltage,
+        .set_voltage_sel        = tps65910_set_voltage,
+        .list_voltage           = tps65910_list_voltage,
+};
+
+static __devinit int tps65910_probe(struct platform_device *pdev)
+{
+        struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
+        struct tps_info *info = tps65910_regs;
+        struct regulator_init_data *reg_data;
+        struct regulator_dev *rdev;
+        struct tps65910_reg *pmic;
+        struct tps65910_board *pmic_plat_data;
+        static int desc_id;
+        int i, err;
+
+        pmic_plat_data = dev_get_platdata(tps65910->dev);
+        if (!pmic_plat_data)
+                return -EINVAL;
+
+        reg_data = pmic_plat_data->tps65910_pmic_init_data;
+
+        pmic = kzalloc(sizeof(*pmic), GFP_KERNEL);
+        if (!pmic)
+                return -ENOMEM;
+
+        mutex_init(&pmic->mutex);
+        pmic->mfd = tps65910;
+        platform_set_drvdata(pdev, pmic);
+
+        /* Give control of all register to control port */
+        tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL,
+                                DEVCTRL_SR_CTL_I2C_SEL_MASK);
+
+        for (i = 0; i < TPS65910_NUM_REGULATOR; i++, info++, reg_data++) {
+                /* Register the regulators */
+                pmic->info[i] = info;
+
+                pmic->desc[i].name = info->name;
+                pmic->desc[i].id = desc_id++;
+                pmic->desc[i].n_voltages = info->table_len;
+
+                if ((i == TPS65910_REG_VDD1) || (i == TPS65910_REG_VDD2))
+                        pmic->desc[i].ops = &tps65910_ops_dcdc;
+                else if (i == TPS65910_REG_VDD3)
+                        pmic->desc[i].ops = &tps65910_ops_vdd3;
+                else
+                        pmic->desc[i].ops = &tps65910_ops;
+
+                pmic->desc[i].type = REGULATOR_VOLTAGE;
+                pmic->desc[i].owner = THIS_MODULE;
+
+                rdev = regulator_register(&pmic->desc[i],
+                                tps65910->dev, reg_data, pmic);
+                if (IS_ERR(rdev)) {
+                        dev_err(tps65910->dev,
+                                "failed to register %s regulator\n",
+                                pdev->name);
+                        err = PTR_ERR(rdev);
+                        goto err;
+                }
+
+                /* Save regulator for cleanup */
+                pmic->rdev[i] = rdev;
+        }
+        return 0;
+
+err:
+        while (--i >= 0)
+                regulator_unregister(pmic->rdev[i]);
+
+        kfree(pmic);
+        return err;
+}
+
+static int __devexit tps65910_remove(struct platform_device *pdev)
+{
+        struct tps65910_reg *tps65910_reg = platform_get_drvdata(pdev);
+        int i;
+
+        for (i = 0; i < TPS65910_NUM_REGULATOR; i++)
+                regulator_unregister(tps65910_reg->rdev[i]);
+
+        kfree(tps65910_reg);
+        return 0;
+}
+
+static struct platform_driver tps65910_driver = {
+        .driver = {
+                .name = "tps65910-pmic",
+                .owner = THIS_MODULE,
+        },
+        .probe = tps65910_probe,
+        .remove = __devexit_p(tps65910_remove),
+};
+
+static int __init tps65910_init(void)
+{
+        return platform_driver_register(&tps65910_driver);
+}
+subsys_initcall(tps65910_init);
+
+static void __exit tps65910_cleanup(void)
+{
+        platform_driver_unregister(&tps65910_driver);
+}
+module_exit(tps65910_cleanup);
+
+MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
+MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:tps65910-pmic");