Added missing tegra files.HEADmaster

1 files changed, 955 insertions, 0 deletions

diff --git a/drivers/regulator/tps6591x-regulator.c b/drivers/regulator/tps6591x-regulator.c
new file mode 100644
index 00000000000..5336f3d8257
--- /dev/null
+++ b/drivers/regulator/tps6591x-regulator.c
@@ -0,0 +1,955 @@
+/*
+ * driver/regulator/tps6591x-regulator.c
+ *
+ * Regulator driver for TI TPS6591x PMIC family
+ *
+ * Copyright (C) 2011 NVIDIA Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/tps6591x-regulator.h>
+#include <linux/mfd/tps6591x.h>
+
+/* supply control and voltage setting  */
+#define TPS6591X_VIO_ADD                0x20
+#define TPS6591X_VDD1_ADD               0x21
+#define TPS6591X_VDD1_OP_ADD            0x22
+#define TPS6591X_VDD1_SR_ADD            0x23
+#define TPS6591X_VDD2_ADD               0x24
+#define TPS6591X_VDD2_OP_ADD            0x25
+#define TPS6591X_VDD2_SR_ADD            0x26
+#define TPS6591X_VDDCTRL_ADD            0x27
+#define TPS6591X_VDDCTRL_OP_ADD         0x28
+#define TPS6591X_VDDCTRL_SR_ADD         0x29
+#define TPS6591X_LDO1_ADD               0x30
+#define TPS6591X_LDO2_ADD               0x31
+#define TPS6591X_LDO3_ADD               0x37
+#define TPS6591X_LDO4_ADD               0x36
+#define TPS6591X_LDO5_ADD               0x32
+#define TPS6591X_LDO6_ADD               0x35
+#define TPS6591X_LDO7_ADD               0x34
+#define TPS6591X_LDO8_ADD               0x33
+#define TPS6591X_SLEEP_SET_LDO_OFF_ADD  0x43
+#define TPS6591X_SLEEP_SET_RES_OFF_ADD  0x44
+#define TPS6591X_EN1_LDO_ADD            0x45
+#define TPS6591X_EN1_SMPS_ADD           0x46
+#define TPS6591X_EN2_LDO_ADD            0x47
+#define TPS6591X_EN2_SMPS_ADD           0x48
+#define TPS6591X_INVALID_ADD            0xFF
+
+#define EN1_EN2_OFFSET                  2
+
+struct tps6591x_register_info {
+        unsigned char addr;
+        unsigned char nbits;
+        unsigned char shift_bits;
+        uint8_t cache_val;
+};
+
+enum {
+        supply_type_none = 0x0,
+        supply_type_single_reg,
+        supply_type_sr_op_reg
+};
+
+struct tps6591x_regulator {
+        struct regulator_desc desc;
+        int supply_type;
+
+        struct tps6591x_register_info supply_reg;
+        struct tps6591x_register_info op_reg;
+        struct tps6591x_register_info sr_reg;
+        struct tps6591x_register_info en1_reg;
+        struct tps6591x_register_info slp_off_reg;
+
+        int *voltages;
+
+        int enable_delay; /* delay in us for regulator to stabilize */
+        enum tps6591x_ext_control ectrl;
+        int current_volt_uv;
+
+        /* Time (micro sec) taken for 1uV change */
+        int voltage_change_uv_per_us;
+        unsigned int config_flags;
+};
+
+static inline struct device *to_tps6591x_dev(struct regulator_dev *rdev)
+{
+        return rdev_get_dev(rdev)->parent->parent;
+}
+
+static int tps6591x_regulator_enable_time(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+
+        return ri->enable_delay;
+}
+
+static int __tps6591x_ext_control_set(struct device *parent,
+                                      struct tps6591x_regulator *ri,
+                                      enum tps6591x_ext_control ectrl)
+{
+        int ret;
+        uint8_t mask, reg_val, addr, offset;
+        struct tps6591x_register_info *ext_reg;
+
+        /* For regulator that has separate operational and sleep register make
+           sure that operational is used and clear sleep register to turn
+           regulator off when external control is inactive */
+        if (ri->supply_type == supply_type_sr_op_reg) {
+                reg_val = ri->op_reg.cache_val;
+                if (reg_val & 0x80) {   /* boot has used sr - switch to op */
+                        reg_val = ri->sr_reg.cache_val;
+                        mask = ((1 << ri->sr_reg.nbits) - 1)
+                                << ri->sr_reg.shift_bits;
+                        reg_val &= mask;
+                        ret = tps6591x_write(parent, ri->op_reg.addr, reg_val);
+                        if (ret)
+                                return ret;
+                        ri->op_reg.cache_val = reg_val;
+                }
+                ret = tps6591x_write(parent, ri->sr_reg.addr, 0);
+                if (ret)
+                        return ret;
+                ri->sr_reg.cache_val = 0;
+        }
+
+        offset = 0;
+        switch (ectrl) {
+        case EXT_CTRL_EN2:
+                offset = EN1_EN2_OFFSET;
+                /* fall through to EXT_CTRL_EN1 */
+        case EXT_CTRL_EN1:
+                ext_reg = &(ri->en1_reg);
+                break;
+        case EXT_CTRL_SLEEP_OFF:
+                ext_reg = &(ri->slp_off_reg);
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        addr = ext_reg->addr + offset;
+        mask = ((1 << ext_reg->nbits) - 1) << ext_reg->shift_bits;
+
+        return tps6591x_update(parent, addr, mask, mask);
+}
+
+static void wait_for_voltage_change(struct tps6591x_regulator *ri, int uV)
+{
+        int change_uv;
+        int change_us;
+
+        change_uv = abs(uV - ri->current_volt_uv);
+        change_us = change_uv/ri->voltage_change_uv_per_us + 1;
+        if (change_us >= 1000) {
+                mdelay(change_us/1000);
+                change_us -= (change_us/1000);
+        }
+        if (change_us)
+                udelay(change_us);
+        ri->current_volt_uv = uV;
+}
+
+static int __tps6591x_vio_set_voltage(struct device *parent,
+                                      struct tps6591x_regulator *ri,
+                                      int min_uV, int max_uV,
+                                      unsigned *selector)
+{
+        int uV;
+        uint8_t mask;
+        uint8_t val;
+        int ret;
+        uint8_t reg_val;
+
+        for (val = 0; val < ri->desc.n_voltages; val++) {
+                uV = ri->voltages[val] * 1000;
+
+                /* use the first in-range value */
+                if (min_uV <= uV && uV <= max_uV) {
+                        if (selector)
+                                *selector = val;
+
+                        reg_val = ri->supply_reg.cache_val;
+                        val <<= ri->supply_reg.shift_bits;
+
+                        mask = ((1 << ri->supply_reg.nbits) - 1) <<
+                                        ri->supply_reg.shift_bits;
+                        reg_val = (reg_val & ~mask) | (val & mask);
+
+                        ret = tps6591x_write(parent, ri->supply_reg.addr,
+                                        reg_val);
+                        if (ret >= 0) {
+                                wait_for_voltage_change(ri, uV);
+                                ri->supply_reg.cache_val = reg_val;
+                        }
+                        return ret;
+                }
+        }
+
+        return -EINVAL;
+}
+
+static int tps6591x_vio_set_voltage(struct regulator_dev *rdev,
+                                    int min_uV, int max_uV,
+                                    unsigned *selector)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+
+        return __tps6591x_vio_set_voltage(parent, ri, min_uV, max_uV,
+                                          selector);
+}
+
+static int tps6591x_vio_get_voltage(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        uint8_t val, mask;
+
+        val = ri->supply_reg.cache_val;
+
+        mask = ((1 << ri->supply_reg.nbits) - 1) << ri->supply_reg.shift_bits;
+        val = (val & mask) >> ri->supply_reg.shift_bits;
+
+        if (val >= ri->desc.n_voltages)
+                BUG();
+
+        return ri->voltages[val] * 1000;
+}
+
+
+static int tps6591x_ldo_list_voltage(struct regulator_dev *rdev,
+                                     unsigned selector)
+{
+        struct tps6591x_regulator *info = rdev_get_drvdata(rdev);
+
+        return info->voltages[selector] * 1000;
+}
+
+static int __tps6591x_ldo1_set_voltage(struct device *parent,
+                                       struct tps6591x_regulator *ri,
+                                       int min_uV, int max_uV,
+                                       unsigned *selector)
+{
+        int val, uV;
+        uint8_t mask;
+        uint8_t reg_val;
+        int ret;
+
+        for (val = 0; val < ri->desc.n_voltages; val++) {
+                uV = ri->voltages[val] * 1000;
+
+                /* use the first in-range value */
+                if (min_uV <= uV && uV <= max_uV) {
+                        if (selector)
+                                *selector = val;
+                        reg_val = ri->supply_reg.cache_val;
+                        val += 4;
+                        val <<= ri->supply_reg.shift_bits;
+                        mask = ((1 << ri->supply_reg.nbits) - 1) <<
+                                        ri->supply_reg.shift_bits;
+
+                        reg_val = (reg_val & ~mask) | (val & mask);
+                        ret = tps6591x_write(parent, ri->supply_reg.addr,
+                                        reg_val);
+                        if (ret >= 0) {
+                                wait_for_voltage_change(ri, uV);
+                                ri->supply_reg.cache_val = reg_val;
+                        }
+                        return ret;
+                }
+        }
+
+        return -EINVAL;
+}
+
+static int tps6591x_ldo1_set_voltage(struct regulator_dev *rdev,
+                                     int min_uV, int max_uV,
+                                     unsigned *selector)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+
+        return __tps6591x_ldo1_set_voltage(parent, ri, min_uV, max_uV,
+                                           selector);
+}
+
+static int tps6591x_ldo1_get_voltage(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        uint8_t val, mask;
+
+        val = ri->supply_reg.cache_val;
+        mask = ((1 << ri->supply_reg.nbits) - 1) << ri->supply_reg.shift_bits;
+        val = (val & mask) >> ri->supply_reg.shift_bits;
+
+        if (val < 4)
+                return 1000 * 1000;
+        else if (val > 0x32)
+                return 3300 * 1000;
+        else
+                val -= 4;
+        if (val >= ri->desc.n_voltages)
+                BUG();
+
+        return ri->voltages[val] * 1000;
+}
+
+static int __tps6591x_ldo3_set_voltage(struct device *parent,
+                                       struct tps6591x_regulator *ri,
+                                       int min_uV, int max_uV,
+                                       unsigned *selector)
+{
+        int val, uV;
+        uint8_t mask;
+        int ret;
+        uint8_t reg_val;
+
+        for (val = 0; val < ri->desc.n_voltages; val++) {
+                uV = ri->voltages[val] * 1000;
+
+                /* use the first in-range value */
+                if (min_uV <= uV && uV <= max_uV) {
+                        if (selector)
+                                *selector = val;
+                        reg_val = ri->supply_reg.cache_val;
+                        val += 2;
+                        val <<= ri->supply_reg.shift_bits;
+                        mask = ((1 << ri->supply_reg.nbits) - 1) <<
+                                                ri->supply_reg.shift_bits;
+
+                        reg_val = (reg_val & ~mask) | (val & mask);
+
+                        ret = tps6591x_write(parent, ri->supply_reg.addr,
+                                        reg_val);
+                        if (ret >= 0) {
+                                wait_for_voltage_change(ri, uV);
+                                ri->supply_reg.cache_val = reg_val;
+                        }
+                        return ret;
+                }
+        }
+
+        return -EINVAL;
+}
+
+static int tps6591x_ldo3_set_voltage(struct regulator_dev *rdev,
+                                     int min_uV, int max_uV,
+                                     unsigned *selector)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+
+        return __tps6591x_ldo3_set_voltage(parent, ri, min_uV, max_uV,
+                                           selector);
+}
+
+static int tps6591x_ldo3_get_voltage(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        uint8_t val, mask;
+
+        val = ri->supply_reg.cache_val;
+        mask = ((1 << ri->supply_reg.nbits) - 1) << ri->supply_reg.shift_bits;
+        val = (val & mask) >> ri->supply_reg.shift_bits;
+
+        if (val < 2)
+                return 1000 * 1000;
+        else if (val > 0x19)
+                return 3300 * 1000;
+        else
+                val -= 2;
+        if (val >= ri->desc.n_voltages)
+                BUG();
+
+        return ri->voltages[val] * 1000;
+}
+
+static int __tps6591x_vdd_set_voltage(struct device *parent,
+                                      struct tps6591x_regulator *ri,
+                                      int min_uV, int max_uV,
+                                      unsigned *selector)
+{
+        int val, uV, ret;
+        uint8_t mask;
+        uint8_t op_reg_val;
+        uint8_t sr_reg_val;
+
+        for (val = 0; val < ri->desc.n_voltages; val++) {
+                uV = ri->voltages[val] * 1000;
+
+                /* use the first in-range value */
+                if (min_uV <= uV && uV <= max_uV) {
+                        if (selector)
+                                *selector = val;
+                        op_reg_val = ri->op_reg.cache_val;
+                        val += 3;
+                        if (op_reg_val & 0x80) {
+                                sr_reg_val = ri->sr_reg.cache_val;
+                                val <<= ri->sr_reg.shift_bits;
+                                mask = ((1 << ri->sr_reg.nbits) - 1)
+                                        << ri->sr_reg.shift_bits;
+                                sr_reg_val = (sr_reg_val & ~mask) |
+                                                        (val & mask);
+                                ret = tps6591x_write(parent,
+                                        ri->sr_reg.addr, sr_reg_val);
+                                if (!ret)
+                                        ri->sr_reg.cache_val = sr_reg_val;
+                        } else {
+                                val <<= ri->op_reg.shift_bits;
+                                mask = ((1 << ri->op_reg.nbits) - 1)
+                                        << ri->op_reg.shift_bits;
+                                op_reg_val = (op_reg_val & ~mask) |
+                                                        (val & mask);
+                                ret = tps6591x_write(parent,
+                                        ri->op_reg.addr, op_reg_val);
+                                if (!ret)
+                                        ri->op_reg.cache_val = op_reg_val;
+                        }
+                        if (ret >= 0)
+                                wait_for_voltage_change(ri, uV);
+                        return ret;
+                }
+        }
+
+        return -EINVAL;
+}
+
+static int tps6591x_vdd_set_voltage(struct regulator_dev *rdev,
+                                    int min_uV, int max_uV,
+                                    unsigned *selector)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+
+        return __tps6591x_vdd_set_voltage(parent, ri, min_uV, max_uV,
+                                          selector);
+}
+
+static int tps6591x_vdd_get_voltage(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        uint8_t op_val, sr_val, val;
+
+        op_val = ri->op_reg.cache_val;
+        sr_val = ri->sr_reg.cache_val;
+
+        val = (op_val & 0x80) ? (sr_val & 0x7F) : (op_val & 0x7F);
+
+        if (!val)
+                return 0;
+        else if (val < 0x3)
+                return 600 * 1000;
+        else if (val > 0x4B)
+                return 1500 * 1000;
+        else
+                val -= 3;
+
+        if (val >= ri->desc.n_voltages)
+                BUG();
+
+        return ri->voltages[val] * 1000;
+}
+
+static int tps6591x_regulator_enable(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+        uint8_t reg_val;
+        int ret;
+
+        reg_val = ri->supply_reg.cache_val;
+        reg_val |= 0x1;
+
+        ret = tps6591x_write(parent, ri->supply_reg.addr, reg_val);
+        if (!ret)
+                ri->supply_reg.cache_val = reg_val;
+        return ret;
+}
+
+static int tps6591x_regulator_disable(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+        uint8_t reg_val;
+        int ret;
+
+        reg_val = ri->supply_reg.cache_val;
+        reg_val &= ~0x1;
+        ret = tps6591x_write(parent, ri->supply_reg.addr, reg_val);
+        if (!ret)
+                ri->supply_reg.cache_val = reg_val;
+        return ret;
+}
+
+static int tps6591x_regulator_is_enabled(struct regulator_dev *rdev)
+{
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        uint8_t reg_val;
+
+        reg_val = ri->supply_reg.cache_val;
+        reg_val &= 0x1;
+        return reg_val & 0x1;
+}
+
+static struct regulator_ops tps6591x_regulator_vio_ops = {
+        .list_voltage = tps6591x_ldo_list_voltage,
+        .get_voltage = tps6591x_vio_get_voltage,
+        .set_voltage = tps6591x_vio_set_voltage,
+
+        .enable_time = tps6591x_regulator_enable_time,
+        .is_enabled = tps6591x_regulator_is_enabled,
+        .enable = tps6591x_regulator_enable,
+        .disable = tps6591x_regulator_disable,
+};
+
+static struct regulator_ops tps6591x_regulator_ldo1_ops = {
+        .list_voltage = tps6591x_ldo_list_voltage,
+        .get_voltage = tps6591x_ldo1_get_voltage,
+        .set_voltage = tps6591x_ldo1_set_voltage,
+
+        .enable_time = tps6591x_regulator_enable_time,
+        .is_enabled = tps6591x_regulator_is_enabled,
+        .enable = tps6591x_regulator_enable,
+        .disable = tps6591x_regulator_disable,
+};
+
+static struct regulator_ops tps6591x_regulator_ldo3_ops = {
+        .list_voltage = tps6591x_ldo_list_voltage,
+        .get_voltage = tps6591x_ldo3_get_voltage,
+        .set_voltage = tps6591x_ldo3_set_voltage,
+
+        .enable_time = tps6591x_regulator_enable_time,
+        .is_enabled = tps6591x_regulator_is_enabled,
+        .enable = tps6591x_regulator_enable,
+        .disable = tps6591x_regulator_disable,
+};
+
+static struct regulator_ops tps6591x_regulator_vdd_ops = {
+        .list_voltage = tps6591x_ldo_list_voltage,
+        .get_voltage = tps6591x_vdd_get_voltage,
+        .set_voltage = tps6591x_vdd_set_voltage,
+
+        .enable_time = tps6591x_regulator_enable_time,
+        .is_enabled = tps6591x_regulator_is_enabled,
+        .enable = tps6591x_regulator_enable,
+        .disable = tps6591x_regulator_disable,
+};
+
+static int tps6591x_vio_voltages[] = {
+        1500, 1800, 2500, 3300,
+};
+
+/* SEL[7:2]=000100:1000mV --> 110010:3300mV */
+static int tps6591x_ldo124_voltages[] = {
+        1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450,
+        1500, 1550, 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950,
+        2000, 2050, 2100, 2150, 2200, 2250, 2300, 2350, 2400, 2450,
+        2500, 2550, 2600, 2650, 2700, 2750, 2800, 2850, 2900, 2950,
+        3000, 3050, 3100, 3150, 3200, 3250, 3300,
+};
+
+/* SEL[6:2]=00010:1000mv --> 11001:3300mV */
+static int tps6591x_ldo35678_voltages[] = {
+        1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900,
+        2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700, 2800, 2900,
+        3000, 3100, 3200, 3300,
+};
+
+static int tps6591x_vdd_voltages[] = {
+        600, 612, 625, 637, 650, 662, 675, 687, 700, 712, 725, 737,
+        750, 762, 775, 787, 800, 812, 825, 837, 850, 862, 875, 887,
+        900, 912, 925, 937, 950, 962, 975, 987, 1000, 1012, 1025,
+        1037, 1050, 1062, 1075, 1087, 1100, 1112, 1125, 1137, 1150,
+        1162, 1175, 1187, 1200, 1212, 1225, 1237, 1250, 1262, 1275,
+        1287, 1300, 1312, 1325, 1337, 1350, 1362, 1375, 1387, 1400,
+        1412, 1425, 1437, 1450, 1462, 1475, 1487, 1500,
+};
+
+static int tps6591x_vddctrl_voltages[] = {
+        600, 612, 625, 637, 650, 662, 675, 687, 700, 712, 725, 737,
+        750, 762, 775, 787, 800, 812, 825, 837, 850, 862, 875, 887,
+        900, 912, 925, 937, 950, 962, 975, 987, 1000, 1012, 1025,
+        1037, 1050, 1062, 1075, 1087, 1100, 1112, 1125, 1137, 1150,
+        1162, 1175, 1187, 1200, 1212, 1225, 1237, 1250, 1262, 1275,
+        1287, 1300, 1312, 1325, 1337, 1350, 1362, 1375, 1387, 1400,
+};
+
+#define TPS6591X_REGULATOR(_id, vdata, _ops, s_addr, s_nbits, s_shift,  \
+                        s_type, op_addr, op_nbits, op_shift, sr_addr,   \
+                        sr_nbits, sr_shift, en1_addr, en1_shift,        \
+                        slp_off_addr, slp_off_shift, en_time,           \
+                        change_rate)                                    \
+        .desc   = {                                                     \
+                .name   = tps6591x_rails(_id),                          \
+                .ops    = &tps6591x_regulator_##_ops,                   \
+                .type   = REGULATOR_VOLTAGE,                            \
+                .id     = TPS6591X_ID_##_id,                            \
+                .n_voltages = ARRAY_SIZE(tps6591x_##vdata##_voltages),  \
+                .owner  = THIS_MODULE,                                  \
+        },                                                              \
+        .supply_type    = supply_type_##s_type,                         \
+        .supply_reg     = {                                             \
+                .addr   = TPS6591X_##s_addr##_ADD,                      \
+                .nbits  = s_nbits,                                      \
+                .shift_bits = s_shift,                                  \
+        },                                                              \
+        .op_reg         = {                                             \
+                .addr   = TPS6591X_##op_addr##_ADD,                     \
+                .nbits  = op_nbits,                                     \
+                .shift_bits = op_shift,                                 \
+        },                                                              \
+        .sr_reg         = {                                             \
+                .addr   = TPS6591X_##sr_addr##_ADD,                     \
+                .nbits  = sr_nbits,                                     \
+                .shift_bits = sr_shift,                                 \
+        },                                                              \
+        .en1_reg        = {                                             \
+                .addr   = TPS6591X_##en1_addr##_ADD,                    \
+                .nbits  = 1,                                            \
+                .shift_bits = en1_shift,                                \
+        },                                                              \
+        .slp_off_reg    = {                                             \
+                .addr   = TPS6591X_SLEEP_SET_##slp_off_addr##_ADD,      \
+                .nbits  = 1,                                            \
+                .shift_bits = slp_off_shift,                            \
+        },                                                              \
+        .voltages       = tps6591x_##vdata##_voltages,                  \
+        .enable_delay           = en_time,                              \
+        .voltage_change_uv_per_us = change_rate,
+
+#define TPS6591X_VIO(_id, vdata, s_addr, s_nbits, s_shift, s_type,      \
+                        en1_shift, slp_off_shift, en_time)              \
+{                                                                       \
+        TPS6591X_REGULATOR(_id, vdata, vio_ops, s_addr, s_nbits,        \
+                        s_shift, s_type, INVALID, 0, 0, INVALID, 0, 0,  \
+                        EN1_SMPS, en1_shift, RES_OFF, slp_off_shift,    \
+                        en_time, 10000)                                 \
+}
+
+#define TPS6591X_LDO1(_id, vdata, s_addr, s_nbits, s_shift, s_type,     \
+                        en1_shift, slp_off_shift, en_time)              \
+{                                                                       \
+        TPS6591X_REGULATOR(_id, vdata, ldo1_ops, s_addr, s_nbits,       \
+                        s_shift, s_type, INVALID, 0, 0, INVALID, 0, 0,  \
+                        EN1_LDO, en1_shift, LDO_OFF, slp_off_shift,     \
+                        en_time, 6000)                                  \
+}
+
+#define TPS6591X_LDO3(_id, vdata, s_addr, s_nbits, s_shift, s_type,     \
+                        en1_shift, slp_off_shift, en_time)              \
+{                                                                       \
+        TPS6591X_REGULATOR(_id, vdata, ldo3_ops, s_addr, s_nbits,       \
+                        s_shift, s_type, INVALID, 0, 0, INVALID, 0, 0,  \
+                        EN1_LDO, en1_shift, LDO_OFF, slp_off_shift,     \
+                        en_time, 11000)                                 \
+}
+
+#define TPS6591X_VDD(_id, vdata, s_addr, s_nbits, s_shift, s_type,      \
+                        op_addr, op_nbits, op_shift, sr_addr, sr_nbits, \
+                        sr_shift, en1_shift, slp_off_shift, en_time)    \
+{                                                                       \
+        TPS6591X_REGULATOR(_id, vdata, vdd_ops, s_addr, s_nbits,        \
+                        s_shift, s_type, op_addr, op_nbits, op_shift,   \
+                        sr_addr, sr_nbits, sr_shift, EN1_SMPS,          \
+                        en1_shift, RES_OFF, slp_off_shift, en_time,     \
+                        5000)                                           \
+}
+
+static struct tps6591x_regulator tps6591x_regulator[] = {
+        TPS6591X_VIO(VIO, vio, VIO, 2, 2, single_reg, 0, 0, 350),
+        TPS6591X_LDO1(LDO_1, ldo124, LDO1, 6, 2, single_reg, 1, 1, 420),
+        TPS6591X_LDO1(LDO_2, ldo124, LDO2, 6, 2, single_reg, 2, 2, 420),
+        TPS6591X_LDO3(LDO_3, ldo35678, LDO3, 5, 2, single_reg, 7, 7, 230),
+        TPS6591X_LDO1(LDO_4, ldo124, LDO4, 6, 2, single_reg, 6, 6, 230),
+        TPS6591X_LDO3(LDO_5, ldo35678, LDO5, 5, 2, single_reg, 3, 3, 230),
+        TPS6591X_LDO3(LDO_6, ldo35678, LDO6, 5, 2, single_reg, 0, 0, 230),
+        TPS6591X_LDO3(LDO_7, ldo35678, LDO7, 5, 2, single_reg, 5, 5, 230),
+        TPS6591X_LDO3(LDO_8, ldo35678, LDO8, 5, 2, single_reg, 4, 4, 230),
+        TPS6591X_VDD(VDD_1, vdd, VDD1, 2, 0, sr_op_reg, VDD1_OP,
+                7, 0, VDD1_SR, 7, 0, 1, 1, 350),
+        TPS6591X_VDD(VDD_2, vdd, VDD2, 2, 0, sr_op_reg, VDD2_OP,
+                7, 0, VDD2_SR, 7, 0, 2, 2, 350),
+        TPS6591X_VDD(VDDCTRL, vddctrl, VDDCTRL, 2, 0, sr_op_reg,
+                VDDCTRL_OP, 7, 0, VDDCTRL_SR, 7, 0, 3, 3, 900),
+};
+
+static inline int tps6591x_regulator_preinit(struct device *parent,
+                struct tps6591x_regulator *ri,
+                struct tps6591x_regulator_platform_data *tps6591x_pdata)
+{
+        int ret;
+        uint8_t reg_val;
+
+        if (tps6591x_pdata->ectrl != EXT_CTRL_NONE) {
+                ret = __tps6591x_ext_control_set(
+                        parent, ri, tps6591x_pdata->ectrl);
+                if (ret < 0) {
+                        pr_err("Not able to configure external control %d"
+                               " for rail %d err %d\n", tps6591x_pdata->ectrl,
+                               ri->desc.id, ret);
+                        return ret;
+                }
+        }
+
+        if (!tps6591x_pdata->init_apply)
+                return 0;
+
+        if (tps6591x_pdata->init_uV >= 0) {
+                switch (ri->desc.id) {
+                case TPS6591X_ID_VIO:
+                        ret = __tps6591x_vio_set_voltage(parent, ri,
+                                        tps6591x_pdata->init_uV,
+                                        tps6591x_pdata->init_uV, 0);
+                        break;
+
+                case TPS6591X_ID_LDO_1:
+                case TPS6591X_ID_LDO_2:
+                case TPS6591X_ID_LDO_4:
+                        ret = __tps6591x_ldo1_set_voltage(parent, ri,
+                                        tps6591x_pdata->init_uV,
+                                        tps6591x_pdata->init_uV, 0);
+                        break;
+
+                case TPS6591X_ID_LDO_3:
+                case TPS6591X_ID_LDO_5:
+                case TPS6591X_ID_LDO_6:
+                case TPS6591X_ID_LDO_7:
+                case TPS6591X_ID_LDO_8:
+                        ret = __tps6591x_ldo3_set_voltage(parent, ri,
+                                        tps6591x_pdata->init_uV,
+                                        tps6591x_pdata->init_uV, 0);
+                        break;
+
+                case TPS6591X_ID_VDD_1:
+                case TPS6591X_ID_VDD_2:
+                case TPS6591X_ID_VDDCTRL:
+                        ret = __tps6591x_vdd_set_voltage(parent, ri,
+                                        tps6591x_pdata->init_uV,
+                                        tps6591x_pdata->init_uV, 0);
+                        break;
+
+                default:
+                        ret = -EINVAL;
+                        break;
+                }
+                if (ret < 0) {
+                        pr_err("Not able to initialize voltage %d for rail "
+                                "%d err %d\n", tps6591x_pdata->init_uV,
+                                ri->desc.id, ret);
+                        return ret;
+                }
+        }
+
+        reg_val = ri->supply_reg.cache_val;
+        if (tps6591x_pdata->init_enable)
+                reg_val |= 0x1;
+        else
+                reg_val &= ~0x1;
+        ret = tps6591x_write(parent, ri->supply_reg.addr, reg_val);
+
+        if (ret < 0)
+                pr_err("Not able to %s rail %d err %d\n",
+                        (tps6591x_pdata->init_enable) ? "enable" : "disable",
+                        ri->desc.id, ret);
+        else
+                ri->supply_reg.cache_val = reg_val;
+        return ret;
+}
+
+static inline int tps6591x_cache_regulator_register(struct device *parent,
+                struct tps6591x_regulator *ri)
+{
+        int ret;
+        ret = tps6591x_read(parent, ri->supply_reg.addr,
+                                &ri->supply_reg.cache_val);
+        if (!ret && (ri->supply_type == supply_type_sr_op_reg)) {
+                ret = tps6591x_read(parent, ri->op_reg.addr,
+                                &ri->op_reg.cache_val);
+                if (!ret)
+                        ret = tps6591x_read(parent, ri->sr_reg.addr,
+                                &ri->sr_reg.cache_val);
+        }
+        return ret;
+}
+
+static inline struct tps6591x_regulator *find_regulator_info(int id)
+{
+        struct tps6591x_regulator *ri;
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(tps6591x_regulator); i++) {
+                ri = &tps6591x_regulator[i];
+                if (ri->desc.id == id)
+                        return ri;
+        }
+        return NULL;
+}
+
+
+static int __devinit tps6591x_regulator_probe(struct platform_device *pdev)
+{
+        struct tps6591x_regulator *ri = NULL;
+        struct regulator_dev *rdev;
+        struct tps6591x_regulator_platform_data *tps_pdata;
+        int id = pdev->id;
+        int err;
+
+        dev_dbg(&pdev->dev, "Probing reulator %d\n", id);
+
+        ri = find_regulator_info(id);
+        if (ri == NULL) {
+                dev_err(&pdev->dev, "invalid regulator ID specified\n");
+                return -EINVAL;
+        }
+        tps_pdata = pdev->dev.platform_data;
+        ri->ectrl = tps_pdata->ectrl;
+        ri->config_flags = tps_pdata->flags;
+
+        if (tps_pdata->slew_rate_uV_per_us)
+                ri->voltage_change_uv_per_us = tps_pdata->slew_rate_uV_per_us;
+
+        err = tps6591x_cache_regulator_register(pdev->dev.parent, ri);
+        if (err) {
+                dev_err(&pdev->dev, "Error in caching registers error %d\n",
+                                                        err);
+                return err;
+        }
+
+        err = tps6591x_regulator_preinit(pdev->dev.parent, ri, tps_pdata);
+        if (err) {
+                dev_err(&pdev->dev, "Error in pre-initialization of regulator "
+                                        "error %d\n", err);
+                return err;
+        }
+
+        rdev = regulator_register(&ri->desc, &pdev->dev,
+                                &tps_pdata->regulator, ri);
+        if (IS_ERR_OR_NULL(rdev)) {
+                dev_err(&pdev->dev, "failed to register regulator %s\n",
+                                ri->desc.name);
+                return PTR_ERR(rdev);
+        }
+        ri->current_volt_uv = ri->desc.ops->get_voltage(rdev);
+
+        platform_set_drvdata(pdev, rdev);
+
+        return 0;
+}
+
+static int __devexit tps6591x_regulator_remove(struct platform_device *pdev)
+{
+        struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+        regulator_unregister(rdev);
+        return 0;
+}
+
+static void tps6591x_regulator_shutdown(struct platform_device *pdev)
+{
+        struct regulator_dev *rdev = platform_get_drvdata(pdev);
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+        int ret;
+
+        if (ri->ectrl == EXT_CTRL_EN1) {
+                ret = tps6591x_clr_bits(parent, ri->en1_reg.addr,
+                                (1 << ri->en1_reg.shift_bits));
+                if (ret < 0)
+                        dev_err(&pdev->dev, "Error in clearing external control\n");
+        }
+}
+
+static int tps6591x_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        struct regulator_dev *rdev = platform_get_drvdata(pdev);
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+        int ret = 0;
+        uint8_t reg_val;
+
+        if (ri->config_flags & LDO_LOW_POWER_ON_SUSPEND) {
+                ret = tps6591x_clr_bits(parent, ri->en1_reg.addr,
+                                (1 << ri->en1_reg.shift_bits));
+                reg_val = ri->supply_reg.cache_val;
+                reg_val = (reg_val & ~0x3) | (0x3);
+                ret = tps6591x_write(parent, ri->supply_reg.addr, reg_val);
+                if (ret >= 0)
+                        ri->supply_reg.cache_val = reg_val;
+                else
+                        dev_err(&pdev->dev, "Error in updating the supply state\n");
+        }
+        return ret;
+}
+
+static int tps6591x_resume(struct platform_device *pdev)
+{
+        struct regulator_dev *rdev = platform_get_drvdata(pdev);
+        struct tps6591x_regulator *ri = rdev_get_drvdata(rdev);
+        struct device *parent = to_tps6591x_dev(rdev);
+        int ret = 0;
+        uint8_t reg_val;
+
+        if (ri->config_flags & LDO_LOW_POWER_ON_SUSPEND) {
+                ret = tps6591x_clr_bits(parent, ri->en1_reg.addr,
+                                (1 << ri->en1_reg.shift_bits));
+                reg_val = ri->supply_reg.cache_val;
+                reg_val = (reg_val & ~0x3) | (0x1);
+                ret = tps6591x_write(parent, ri->supply_reg.addr, reg_val);
+                if (ret >= 0)
+                        ri->supply_reg.cache_val = reg_val;
+                else
+                        dev_err(&pdev->dev, "Error in updating the supply state\n");
+        }
+        return ret;
+}
+
+static struct platform_driver tps6591x_regulator_driver = {
+        .driver = {
+                .name   = "tps6591x-regulator",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = tps6591x_regulator_probe,
+        .remove         = __devexit_p(tps6591x_regulator_remove),
+        .shutdown       = tps6591x_regulator_shutdown,
+        .suspend        = tps6591x_suspend,
+        .resume         = tps6591x_resume,
+};
+
+static int __init tps6591x_regulator_init(void)
+{
+        return platform_driver_register(&tps6591x_regulator_driver);
+}
+subsys_initcall(tps6591x_regulator_init);
+
+static void __exit tps6591x_regulator_exit(void)
+{
+        platform_driver_unregister(&tps6591x_regulator_driver);
+}
+module_exit(tps6591x_regulator_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Regulator Driver for TI TPS6591X PMIC");
+MODULE_ALIAS("platform:tps6591x-regulator");