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Subject[PATCH 2/2] regulator: tps80031: add regulator driver for tps80031
Date
Add regulator driver for Texas Instrument TPS80031/TPS80032 device.
TPS80031/ TPS80032 Fully Integrated Power Management with Power
Path and Battery Charger. It has 5 configurable step-down
converters, 11 general purpose LDOs, VBUS generator and digital
output to control regulators.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
---
drivers/regulator/Kconfig | 9 +
drivers/regulator/Makefile | 1 +
drivers/regulator/tps80031-regulator.c | 821 ++++++++++++++++++++++++++++++++
include/linux/mfd/tps80031.h | 55 +++
4 files changed, 886 insertions(+), 0 deletions(-)
create mode 100644 drivers/regulator/tps80031-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index cbc685d..0ae658f 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -426,6 +426,15 @@ config REGULATOR_TPS65912
help
This driver supports TPS65912 voltage regulator chip.

+config REGULATOR_TPS80031
+ tristate "TI TPS80031/TPS80032 power regualtor driver"
+ depends on MFD_TPS80031
+ help
+ TPS80031/ TPS80032 Fully Integrated Power Management with Power
+ Path and Battery Charger. It has 5 configurable step-down
+ converters, 11 general purpose LDOs, VBUS generator and digital
+ output to control regulators.
+
config REGULATOR_TWL4030
bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 PMIC"
depends on TWL4030_CORE
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index db274dc..6166d12 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -57,6 +57,7 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
+obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o
obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
diff --git a/drivers/regulator/tps80031-regulator.c b/drivers/regulator/tps80031-regulator.c
new file mode 100644
index 0000000..2fe9cd6
--- /dev/null
+++ b/drivers/regulator/tps80031-regulator.c
@@ -0,0 +1,821 @@
+/*
+ * tps80031-regulator.c -- TI TPS80031 regulator driver.
+ *
+ * Regulator driver for TITPS80031/TPS80032 Fully Integrated Power
+ * Management with Power Path and Battery Charger.
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; 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., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mfd/tps80031.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/slab.h>
+
+/* Flags for DCDC Voltage reading */
+#define DCDC_OFFSET_EN BIT(0)
+#define DCDC_EXTENDED_EN BIT(1)
+#define TRACK_MODE_ENABLE BIT(2)
+
+#define SMPS_MULTOFFSET_VIO BIT(1)
+#define SMPS_MULTOFFSET_SMPS1 BIT(3)
+#define SMPS_MULTOFFSET_SMPS2 BIT(4)
+#define SMPS_MULTOFFSET_SMPS3 BIT(6)
+#define SMPS_MULTOFFSET_SMPS4 BIT(0)
+
+#define SMPS_CMD_MASK 0xC0
+#define SMPS_VSEL_MASK 0x3F
+#define LDO_VSEL_MASK 0x1F
+#define LDO_TRACK_VSEL_MASK 0x3F
+
+#define MISC2_LDOUSB_IN_VSYS BIT(4)
+#define MISC2_LDOUSB_IN_PMID BIT(3)
+#define MISC2_LDOUSB_IN_MASK 0x18
+
+#define MISC2_LDO3_SEL_VIB_VAL BIT(0)
+#define MISC2_LDO3_SEL_VIB_MASK 0x1
+
+#define BOOST_HW_PWR_EN BIT(5)
+#define BOOST_HW_PWR_EN_MASK BIT(5)
+
+#define OPA_MODE_EN BIT(6)
+#define OPA_MODE_EN_MASK BIT(6)
+
+#define USB_VBUS_CTRL_SET 0x04
+#define USB_VBUS_CTRL_CLR 0x05
+#define VBUS_DISCHRG 0x20
+
+struct tps80031_regulator_info {
+ /* Regulator register address.*/
+ u8 trans_reg;
+ u8 state_reg;
+ u8 force_reg;
+ u8 volt_reg;
+ u8 volt_id;
+
+ /*Power request bits */
+ int preq_bit;
+
+ /* used by regulator core */
+ struct regulator_desc desc;
+
+};
+
+struct tps80031_regulator {
+ struct device *dev;
+ struct regulator_dev *rdev;
+ struct tps80031_regulator_info *rinfo;
+
+ u8 device_flags;
+ unsigned int config_flags;
+ unsigned int ext_ctrl_flag;
+};
+
+static inline struct device *to_tps80031_dev(struct regulator_dev *rdev)
+{
+ return rdev_get_dev(rdev)->parent->parent;
+}
+
+static int tps80031_reg_is_enabled(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ u8 reg_val;
+ int ret;
+
+ if (ri->ext_ctrl_flag & EXT_PWR_REQ)
+ return true;
+
+ ret = tps80031_read(parent, SLAVE_ID1, ri->rinfo->state_reg, &reg_val);
+ if (ret < 0) {
+ dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n",
+ ri->rinfo->state_reg, ret);
+ return ret;
+ }
+ return ((reg_val & STATE_MASK) == STATE_ON);
+}
+
+static int tps80031_reg_enable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ if (ri->ext_ctrl_flag & EXT_PWR_REQ)
+ return 0;
+
+ ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->state_reg,
+ STATE_ON, STATE_MASK);
+ if (ret < 0) {
+ dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
+ ri->rinfo->state_reg, ret);
+ return ret;
+ }
+ return ret;
+}
+
+static int tps80031_reg_disable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ if (ri->ext_ctrl_flag & EXT_PWR_REQ)
+ return 0;
+
+ ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->state_reg,
+ STATE_OFF, STATE_MASK);
+ if (ret < 0)
+ dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
+ ri->rinfo->state_reg, ret);
+ return ret;
+}
+
+static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ int voltage = 0;
+
+ switch (ri->device_flags) {
+ case 0:
+ if (sel < 57)
+ voltage = 607700 + 12660 * sel;
+ else if (sel == 57)
+ voltage = 1350 * 1000;
+ else if (sel == 58)
+ voltage = 1500 * 1000;
+ else if (sel == 59)
+ voltage = 1800 * 1000;
+ else if (sel == 60)
+ voltage = 1900 * 1000;
+ else if (sel == 61)
+ voltage = 2100 * 1000;
+ break;
+
+ case DCDC_OFFSET_EN:
+ if (sel < 57)
+ voltage = 700000 + 12500 * sel;
+ else if (sel == 57)
+ voltage = 1350 * 1000;
+ else if (sel == 58)
+ voltage = 1500 * 1000;
+ else if (sel == 59)
+ voltage = 1800 * 1000;
+ else if (sel == 60)
+ voltage = 1900 * 1000;
+ else if (sel == 61)
+ voltage = 2100 * 1000;
+ break;
+
+ case DCDC_EXTENDED_EN:
+ if (sel < 57)
+ voltage = 1852000 + 38600 * sel;
+ else if (sel == 57)
+ voltage = 2084 * 1000;
+ else if (sel == 58)
+ voltage = 2315 * 1000;
+ else if (sel == 59)
+ voltage = 2778 * 1000;
+ else if (sel == 60)
+ voltage = 2932 * 1000;
+ else if (sel == 61)
+ voltage = 3241 * 1000;
+ break;
+
+ case DCDC_OFFSET_EN | DCDC_EXTENDED_EN:
+ if (sel < 57)
+ voltage = 2161000 + 38600 * sel;
+ else if (sel == 57)
+ voltage = 4167 * 1000;
+ else if (sel == 58)
+ voltage = 2315 * 1000;
+ else if (sel == 59)
+ voltage = 2778 * 1000;
+ else if (sel == 60)
+ voltage = 2932 * 1000;
+ else if (sel == 61)
+ voltage = 3241 * 1000;
+ break;
+ }
+
+ return voltage;
+}
+
+static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned vsel)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+ u8 reg_val;
+
+ if (ri->rinfo->force_reg) {
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->force_reg, &reg_val);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ ri->rinfo->force_reg, ret);
+ return ret;
+ }
+ if (!(reg_val & SMPS_CMD_MASK)) {
+ ret = tps80031_update(parent, ri->rinfo->volt_id,
+ ri->rinfo->force_reg, vsel + 1, SMPS_VSEL_MASK);
+ if (ret < 0)
+ dev_err(ri->dev,
+ "reg 0x%02x update failed, e = %d\n",
+ ri->rinfo->force_reg, ret);
+ return ret;
+ }
+ }
+ ret = tps80031_update(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, vsel + 1, SMPS_VSEL_MASK);
+ if (ret < 0)
+ dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n",
+ ri->rinfo->volt_reg, ret);
+ return ret;
+}
+
+static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ uint8_t vsel = 0;
+ int ret;
+
+ if (ri->rinfo->force_reg) {
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->force_reg, &vsel);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ ri->rinfo->force_reg, ret);
+ return ret;
+ }
+
+ if (!(vsel & SMPS_CMD_MASK))
+ return (vsel & SMPS_VSEL_MASK) - 1;
+ }
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, &vsel);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ ri->rinfo->volt_reg, ret);
+ return ret;
+ }
+ return (vsel & SMPS_VSEL_MASK) - 1;
+}
+
+static int tps80031_ldo_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned sel)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */
+ if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) &&
+ (ri->device_flags & TRACK_MODE_ENABLE)) {
+ unsigned nvsel = (sel + 1) & 0x1F;
+ if (((tps80031_get_chip_info(parent) == TPS80031) ||
+ ((tps80031_get_chip_info(parent) == TPS80032) &&
+ (tps80031_get_pmu_version(parent) == 0x0))) &&
+ ((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) {
+ dev_err(ri->dev,
+ "Invalid sel %d in track mode LDO2\n",
+ nvsel);
+ return -EINVAL;
+ }
+ }
+
+ ret = tps80031_write(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, sel + 1);
+ if (ret < 0)
+ dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n",
+ ri->rinfo->volt_reg, ret);
+ return ret;
+}
+
+static int tps80031_ldo_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ uint8_t vsel;
+ int ret;
+
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, &vsel);
+ if (ret < 0) {
+ dev_err(ri->dev, "Error in writing the Voltage register\n");
+ return ret;
+ }
+ return (vsel & rdev->desc->vsel_mask) - 1;
+}
+
+static int tps80031_vbus_is_enabled(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret = -EIO;
+ uint8_t ctrl1 = 0;
+ uint8_t ctrl3 = 0;
+
+ if (!(ri->config_flags & VBUS_SW_ONLY)) {
+ dev_err(&rdev->dev, "%s() is not supported with flag 0x%08x\n",
+ __func__, ri->config_flags);
+ return -EIO;
+ }
+
+ ret = tps80031_read(parent, SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL1, &ctrl1);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+ ret = tps80031_read(parent, SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL3, &ctrl3);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+ if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN))
+ return 1;
+ return ret;
+}
+
+static int tps80031_vbus_enable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ if (!(ri->config_flags & VBUS_SW_ONLY)) {
+ dev_err(&rdev->dev, "%s() is not supported with flag 0x%08x\n",
+ __func__, ri->config_flags);
+ return -EIO;
+ }
+
+ ret = tps80031_set_bits(parent, SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+
+ ret = tps80031_set_bits(parent, SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL3, ret);
+ return ret;
+ }
+ return ret;
+}
+
+static int tps80031_vbus_disable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret = 0;
+
+ if (!(ri->config_flags & VBUS_SW_ONLY)) {
+ dev_err(&rdev->dev, "%s() is not supported with flag 0x%08x\n",
+ __func__, ri->config_flags);
+ return -EIO;
+ }
+
+ if (ri->config_flags & VBUS_DISCHRG_EN_PDN) {
+ ret = tps80031_write(parent, SLAVE_ID2,
+ USB_VBUS_CTRL_SET, VBUS_DISCHRG);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
+ USB_VBUS_CTRL_SET, ret);
+ return ret;
+ }
+ }
+
+ ret = tps80031_clr_bits(parent, SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+
+ ret = tps80031_clr_bits(parent, SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL3, ret);
+ return ret;
+ }
+
+ mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000));
+ if (ri->config_flags & VBUS_DISCHRG_EN_PDN) {
+ ret = tps80031_write(parent, SLAVE_ID2,
+ USB_VBUS_CTRL_CLR, VBUS_DISCHRG);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
+ USB_VBUS_CTRL_CLR, ret);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+static struct regulator_ops tps80031_dcdc_ops = {
+ .list_voltage = tps80031_dcdc_list_voltage,
+ .set_voltage_sel = tps80031_dcdc_set_voltage_sel,
+ .get_voltage_sel = tps80031_dcdc_get_voltage_sel,
+ .enable = tps80031_reg_enable,
+ .disable = tps80031_reg_disable,
+ .is_enabled = tps80031_reg_is_enabled,
+};
+
+static struct regulator_ops tps80031_ldo_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = tps80031_ldo_set_voltage_sel,
+ .get_voltage_sel = tps80031_ldo_get_voltage_sel,
+ .enable = tps80031_reg_enable,
+ .disable = tps80031_reg_disable,
+ .is_enabled = tps80031_reg_is_enabled,
+};
+
+static struct regulator_ops tps80031_vbus_ops = {
+ .enable = tps80031_vbus_enable,
+ .disable = tps80031_vbus_disable,
+ .is_enabled = tps80031_vbus_is_enabled,
+};
+
+static struct regulator_ops tps80031_ext_reg_ops = {
+ .enable = tps80031_reg_enable,
+ .disable = tps80031_reg_disable,
+ .is_enabled = tps80031_reg_is_enabled,
+};
+
+/* Non-exiting default definition for some register */
+#define TPS80031_SMPS3_CFG_FORCE 0
+#define TPS80031_SMPS4_CFG_FORCE 0
+
+#define TPS80031_VBUS_CFG_TRANS 0
+#define TPS80031_VBUS_CFG_STATE 0
+
+#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \
+{ \
+ .trans_reg = TPS80031_##_id##_CFG_TRANS, \
+ .state_reg = TPS80031_##_id##_CFG_STATE, \
+ .force_reg = TPS80031_##_id##_CFG_FORCE, \
+ .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
+ .volt_id = SLAVE_##_volt_id, \
+ .preq_bit = _pbit, \
+ .desc = { \
+ .name = "tps80031_"#_id, \
+ .id = TPS80031_REGULATOR_##_id, \
+ .n_voltages = 62, \
+ .ops = &tps80031_dcdc_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .enable_time = 500, \
+ }, \
+}
+
+#define TPS80031_REG_LDO(_id, _preq_bit) \
+{ \
+ .trans_reg = TPS80031_##_id##_CFG_TRANS, \
+ .state_reg = TPS80031_##_id##_CFG_STATE, \
+ .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
+ .volt_id = SLAVE_ID1, \
+ .preq_bit = _preq_bit, \
+ .desc = { \
+ .owner = THIS_MODULE, \
+ .name = "tps80031_"#_id, \
+ .id = TPS80031_REGULATOR_##_id, \
+ .ops = &tps80031_ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .min_uV = 1000000, \
+ .uV_step = 100000, \
+ .n_voltages = 24, \
+ .vsel_mask = LDO_VSEL_MASK, \
+ .enable_time = 500, \
+ }, \
+}
+
+#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \
+{ \
+ .trans_reg = TPS80031_##_id##_CFG_TRANS, \
+ .state_reg = TPS80031_##_id##_CFG_STATE, \
+ .volt_id = SLAVE_ID1, \
+ .preq_bit = _pbit, \
+ .desc = { \
+ .name = "tps80031_"#_id, \
+ .id = TPS80031_REGULATOR_##_id, \
+ .n_voltages = 2, \
+ .ops = &_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .enable_time = _delay, \
+ }, \
+}
+
+static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = {
+ TPS80031_REG_SMPS(VIO, ID0, 4),
+ TPS80031_REG_SMPS(SMPS1, ID0, 0),
+ TPS80031_REG_SMPS(SMPS2, ID0, 1),
+ TPS80031_REG_SMPS(SMPS3, ID1, 2),
+ TPS80031_REG_SMPS(SMPS4, ID1, 3),
+ TPS80031_REG_LDO(VANA, -1),
+ TPS80031_REG_LDO(LDO1, 8),
+ TPS80031_REG_LDO(LDO2, 9),
+ TPS80031_REG_LDO(LDO3, 10),
+ TPS80031_REG_LDO(LDO4, 11),
+ TPS80031_REG_LDO(LDO5, 12),
+ TPS80031_REG_LDO(LDO6, 13),
+ TPS80031_REG_LDO(LDO7, 14),
+ TPS80031_REG_LDO(LDOLN, 15),
+ TPS80031_REG_LDO(LDOUSB, 5),
+ TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_ops, 100000, -1),
+ TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16),
+ TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17),
+ TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18),
+};
+
+static int tps80031_power_req_config(struct device *parent,
+ struct tps80031_regulator *ri,
+ struct tps80031_regulator_platform_data *tps80031_pdata)
+{
+ int ret = 0;
+
+ if (ri->rinfo->preq_bit < 0)
+ goto skip_pwr_req_config;
+
+ ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag,
+ ri->rinfo->preq_bit, ri->rinfo->state_reg,
+ ri->rinfo->trans_reg);
+ if (ret < 0) {
+ dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret);
+ return ret;
+ }
+
+skip_pwr_req_config:
+ if (tps80031_pdata->ext_ctrl_flag & PWR_ON_ON_SLEEP) {
+ ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->trans_reg,
+ TRANS_SLEEP_ON, TRANS_SLEEP_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n",
+ ri->rinfo->trans_reg, ret);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+static int tps80031_regulator_config(struct device *parent,
+ struct tps80031_regulator *ri,
+ struct tps80031_regulator_platform_data *tps80031_pdata)
+{
+ int ret = 0;
+
+ switch (ri->rinfo->desc.id) {
+ case TPS80031_REGULATOR_LDOUSB:
+ if (ri->config_flags &
+ (USBLDO_INPUT_VSYS | USBLDO_INPUT_PMID)) {
+ unsigned val = 0;
+ if (ri->config_flags & USBLDO_INPUT_VSYS)
+ val = MISC2_LDOUSB_IN_VSYS;
+ else
+ val = MISC2_LDOUSB_IN_PMID;
+
+ ret = tps80031_update(parent, SLAVE_ID1,
+ TPS80031_MISC2, val, MISC2_LDOUSB_IN_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev,
+ "LDOUSB config failed, e= %d\n", ret);
+ return ret;
+ }
+ }
+ break;
+
+ case TPS80031_REGULATOR_LDO3:
+ if (ri->config_flags & LDO3_OUTPUT_VIB) {
+ ret = tps80031_update(parent, SLAVE_ID1,
+ TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL,
+ MISC2_LDO3_SEL_VIB_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev,
+ "LDO3 config failed, e = %d\n", ret);
+ return ret;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ /* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */
+ ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->trans_reg,
+ TRANS_ACTIVE_ON | TRANS_SLEEP_OFF | TRANS_OFF_OFF,
+ TRANS_ACTIVE_MASK | TRANS_SLEEP_MASK | TRANS_OFF_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev, "trans reg update failed, e %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int check_smps_mode_mult(struct device *parent,
+ struct tps80031_regulator *ri)
+{
+ int mult_offset;
+ int ret;
+ u8 smps_offset;
+ u8 smps_mult;
+
+ ret = tps80031_read(parent, SLAVE_ID1,
+ TPS80031_SMPS_OFFSET, &smps_offset);
+ if (ret < 0) {
+ dev_err(parent, "Error in reading smps offset register\n");
+ return ret;
+ }
+
+ ret = tps80031_read(parent, SLAVE_ID1,
+ TPS80031_SMPS_MULT, &smps_mult);
+ if (ret < 0) {
+ dev_err(parent, "Error in reading smps mult register\n");
+ return ret;
+ }
+
+ switch (ri->rinfo->desc.id) {
+ case TPS80031_REGULATOR_VIO:
+ mult_offset = SMPS_MULTOFFSET_VIO;
+ break;
+ case TPS80031_REGULATOR_SMPS1:
+ mult_offset = SMPS_MULTOFFSET_SMPS1;
+ break;
+ case TPS80031_REGULATOR_SMPS2:
+ mult_offset = SMPS_MULTOFFSET_SMPS2;
+ break;
+ case TPS80031_REGULATOR_SMPS3:
+ mult_offset = SMPS_MULTOFFSET_SMPS3;
+ break;
+ case TPS80031_REGULATOR_SMPS4:
+ mult_offset = SMPS_MULTOFFSET_SMPS4;
+ break;
+ case TPS80031_REGULATOR_LDO2:
+ ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0;
+ /* TRACK mode the ldo2 varies from 600mV to 1300mV */
+ if (ri->device_flags & TRACK_MODE_ENABLE) {
+ ri->rinfo->desc.min_uV = 600000;
+ ri->rinfo->desc.uV_step = 12500;
+ ri->rinfo->desc.n_voltages = 57;
+ ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK;
+ }
+ return 0;
+ default:
+ return 0;
+ }
+
+ ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0;
+ ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0;
+ return 0;
+}
+
+static int __devinit tps80031_regulator_probe(struct platform_device *pdev)
+{
+ struct tps80031_platform_data *pdata;
+ struct tps80031_regulator_platform_data *tps_pdata;
+ struct tps80031_regulator_info *rinfo;
+ struct tps80031_regulator *ri;
+ struct tps80031_regulator *pmic;
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ int ret;
+ int num;
+
+ pdata = dev_get_platdata(pdev->dev.parent);
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ pmic = devm_kzalloc(&pdev->dev,
+ TPS80031_REGULATOR_MAX * sizeof(*pmic), GFP_KERNEL);
+ if (!pmic) {
+ dev_err(&pdev->dev, "mem alloc for pmic failed\n");
+ return -ENOMEM;
+ }
+
+ for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
+ tps_pdata = pdata->regulator_pdata[num];
+ rinfo = &tps80031_rinfo[num];
+ ri = &pmic[num];
+ ri->rinfo = rinfo;
+ ri->dev = &pdev->dev;
+
+ check_smps_mode_mult(pdev->dev.parent, ri);
+ config.dev = &pdev->dev;
+ config.init_data = NULL;
+ config.driver_data = ri;
+ if (tps_pdata) {
+ config.init_data = tps_pdata->reg_init_data;
+ ri->config_flags = tps_pdata->config_flags;
+ ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag;
+ ret = tps80031_regulator_config(pdev->dev.parent,
+ ri, tps_pdata);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "regulator config failed, e %d\n", ret);
+ goto fail;
+ }
+
+ ret = tps80031_power_req_config(pdev->dev.parent,
+ ri, tps_pdata);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "pwr_req config failed, err %d\n", ret);
+ goto fail;
+ }
+ }
+ rdev = regulator_register(&ri->rinfo->desc, &config);
+ if (IS_ERR_OR_NULL(rdev)) {
+ dev_err(&pdev->dev,
+ "register regulator failed %s\n",
+ ri->rinfo->desc.name);
+ ret = PTR_ERR(rdev);
+ goto fail;
+ }
+ ri->rdev = rdev;
+ }
+
+ platform_set_drvdata(pdev, pmic);
+ return 0;
+fail:
+ while (--num >= 0) {
+ ri = &pmic[num];
+ regulator_unregister(ri->rdev);
+ }
+ return ret;
+}
+
+static int __devexit tps80031_regulator_remove(struct platform_device *pdev)
+{
+ struct tps80031_regulator *pmic = platform_get_drvdata(pdev);
+ struct tps80031_regulator *ri = NULL;
+ int num;
+
+ for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
+ ri = &pmic[num];
+ regulator_unregister(ri->rdev);
+ }
+ return 0;
+}
+
+static struct platform_driver tps80031_regulator_driver = {
+ .driver = {
+ .name = "tps80031-pmic",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps80031_regulator_probe,
+ .remove = __devexit_p(tps80031_regulator_remove),
+};
+
+static int __init tps80031_regulator_init(void)
+{
+ return platform_driver_register(&tps80031_regulator_driver);
+}
+subsys_initcall(tps80031_regulator_init);
+
+static void __exit tps80031_regulator_exit(void)
+{
+ platform_driver_unregister(&tps80031_regulator_driver);
+}
+module_exit(tps80031_regulator_exit);
+
+MODULE_ALIAS("platform:tps80031-regulator");
+MODULE_DESCRIPTION("Regulator Driver for TI TPS80031 PMIC");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/tps80031.h b/include/linux/mfd/tps80031.h
index ac541a9..ded1851 100644
--- a/include/linux/mfd/tps80031.h
+++ b/include/linux/mfd/tps80031.h
@@ -429,6 +429,44 @@ enum {
#define I2C_ID2_ADDR 0x49
#define I2C_ID3_ADDR 0x4A

+enum {
+ TPS80031_REGULATOR_VIO,
+ TPS80031_REGULATOR_SMPS1,
+ TPS80031_REGULATOR_SMPS2,
+ TPS80031_REGULATOR_SMPS3,
+ TPS80031_REGULATOR_SMPS4,
+ TPS80031_REGULATOR_VANA,
+ TPS80031_REGULATOR_LDO1,
+ TPS80031_REGULATOR_LDO2,
+ TPS80031_REGULATOR_LDO3,
+ TPS80031_REGULATOR_LDO4,
+ TPS80031_REGULATOR_LDO5,
+ TPS80031_REGULATOR_LDO6,
+ TPS80031_REGULATOR_LDO7,
+ TPS80031_REGULATOR_LDOLN,
+ TPS80031_REGULATOR_LDOUSB,
+ TPS80031_REGULATOR_VBUS,
+ TPS80031_REGULATOR_REGEN1,
+ TPS80031_REGULATOR_REGEN2,
+ TPS80031_REGULATOR_SYSEN,
+ TPS80031_REGULATOR_MAX,
+};
+
+/* Different configurations for the rails */
+enum {
+ /* USBLDO input selection */
+ USBLDO_INPUT_VSYS = 0x00000001,
+ USBLDO_INPUT_PMID = 0x00000002,
+
+ /* LDO3 output mode */
+ LDO3_OUTPUT_VIB = 0x00000004,
+
+ /* VBUS configuration */
+ VBUS_DISCHRG_EN_PDN = 0x00000004,
+ VBUS_SW_ONLY = 0x00000008,
+ VBUS_SW_N_ID = 0x00000010,
+};
+
/* External controls requests */
enum tps80031_ext_control {
PWR_REQ_INPUT_NONE = 0x00000000,
@@ -478,11 +516,28 @@ struct tps80031_pupd_init_data {
int setting;
};

+/*
+ * struct tps80031_regulator_platform_data - tps80031 regulator platform data.
+ *
+ * @reg_init_data: The regulator init data.
+ * @ext_ctrl_flag: External control flag for sleep/power request control.
+ * @config_flags: Configuration flag to configure the rails.
+ * It should be ORed of config enums.
+ */
+
+struct tps80031_regulator_platform_data {
+ struct regulator_init_data *reg_init_data;
+ unsigned int ext_ctrl_flag;
+ unsigned int config_flags;
+};
+
struct tps80031_platform_data {
int irq_base;
bool use_power_off;
struct tps80031_pupd_init_data *pupd_init_data;
int pupd_init_data_size;
+ struct tps80031_regulator_platform_data
+ *regulator_pdata[TPS80031_REGULATOR_MAX];
};

static inline int tps80031_write(struct device *dev, int sid,
--
1.7.1.1


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