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Subject[PATCH V4 1/2] MFD: TPS65217: Add new mfd device for TPS65217
Date
The TPS65217 chip is a power management IC for Portable Navigation Systems
and Tablet Computing devices. It contains the following components:

- Regulators
- White LED
- USB battery charger

This patch adds support for tps65217 mfd device. At this time only
the regulator functionality is made available.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
---
drivers/mfd/Kconfig | 15 +++
drivers/mfd/Makefile | 1 +
drivers/mfd/tps65217.c | 242 ++++++++++++++++++++++++++++++++++++
include/linux/mfd/tps65217.h | 283 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 541 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/tps65217.c
create mode 100644 include/linux/mfd/tps65217.h

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index f1391c2..d2c55e8 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -142,6 +142,21 @@ config TPS6507X
This driver can also be built as a module. If so, the module
will be called tps6507x.

+config MFD_TPS65217
+ tristate "TPS65217 Power Management / White LED chips"
+ depends on I2C
+ select MFD_CORE
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the TPS65217 series of
+ Power Management / White LED chips.
+ These include voltage regulators, lithium ion/polymer battery
+ charger, wled and other features that are often used in portable
+ devices.
+
+ This driver can also be built as a module. If so, the module
+ will be called tps65217.
+
config MFD_TPS6586X
bool "TPS6586x Power Management chips"
depends on I2C=y && GPIOLIB && GENERIC_HARDIRQS
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index b2292eb..7a6d111 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_MFD_WM8994) += wm8994-core.o wm8994-irq.o
obj-$(CONFIG_TPS6105X) += tps6105x.o
obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_TPS6507X) += tps6507x.o
+obj-$(CONFIG_MFD_TPS65217) += tps65217.o
obj-$(CONFIG_MFD_TPS65910) += tps65910.o tps65910-irq.o
tps65912-objs := tps65912-core.o tps65912-irq.o
obj-$(CONFIG_MFD_TPS65912) += tps65912.o
diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c
new file mode 100644
index 0000000..f7d854e
--- /dev/null
+++ b/drivers/mfd/tps65217.c
@@ -0,0 +1,242 @@
+/*
+ * tps65217.c
+ *
+ * TPS65217 chip family multi-function driver
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+#include <linux/err.h>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/tps65217.h>
+
+/**
+ * tps65217_reg_read: Read a single tps65217 register.
+ *
+ * @tps: Device to read from.
+ * @reg: Register to read.
+ * @val: Contians the value
+ */
+int tps65217_reg_read(struct tps65217 *tps, unsigned int reg,
+ unsigned int *val)
+{
+ return regmap_read(tps->regmap, reg, val);
+}
+EXPORT_SYMBOL_GPL(tps65217_reg_read);
+
+/**
+ * tps65217_reg_write: Write a single tps65217 register.
+ *
+ * @tps65217: Device to write to.
+ * @reg: Register to write to.
+ * @val: Value to write.
+ * @level: Password protected level
+ */
+int tps65217_reg_write(struct tps65217 *tps, unsigned int reg,
+ unsigned int val, unsigned int level)
+{
+ int ret;
+ unsigned int xor_reg_val;
+
+ switch (level) {
+ case TPS65217_PROTECT_NONE:
+ return regmap_write(tps->regmap, reg, val);
+ case TPS65217_PROTECT_L1:
+ xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
+ ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
+ xor_reg_val);
+ if (ret < 0)
+ return ret;
+
+ return regmap_write(tps->regmap, reg, val);
+ case TPS65217_PROTECT_L2:
+ xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
+ ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
+ xor_reg_val);
+ if (ret < 0)
+ return ret;
+ ret = regmap_write(tps->regmap, reg, val);
+ if (ret < 0)
+ return ret;
+ ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
+ xor_reg_val);
+ if (ret < 0)
+ return ret;
+ return regmap_write(tps->regmap, reg, val);
+ default:
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL_GPL(tps65217_reg_write);
+
+/**
+ * tps65217_update_bits: Modify bits w.r.t mask, val and level.
+ *
+ * @tps65217: Device to write to.
+ * @reg: Register to read-write to.
+ * @mask: Mask.
+ * @val: Value to write.
+ * @level: Password protected level
+ */
+int tps65217_update_bits(struct tps65217 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val, unsigned int level)
+{
+ int ret;
+ unsigned int data;
+
+ ret = tps65217_reg_read(tps, reg, &data);
+ if (ret) {
+ dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
+ return ret;
+ }
+
+ data &= ~mask;
+ data |= val & mask;
+
+ ret = tps65217_reg_write(tps, reg, data, level);
+ if (ret)
+ dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);
+
+ return ret;
+}
+
+int tps65217_set_bits(struct tps65217 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val, unsigned int level)
+{
+ return tps65217_update_bits(tps, reg, mask, val, level);
+}
+EXPORT_SYMBOL_GPL(tps65217_set_bits);
+
+int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
+ unsigned int mask, unsigned int level)
+{
+ return tps65217_update_bits(tps, reg, mask, 0, level);
+}
+EXPORT_SYMBOL_GPL(tps65217_clear_bits);
+
+static struct regmap_config tps65217_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int __devinit tps65217_probe(struct i2c_client *client,
+ const struct i2c_device_id *ids)
+{
+ struct tps65217 *tps;
+ struct tps65217_board *pdata = client->dev.platform_data;
+ int i, ret;
+ unsigned int version;
+
+ tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ tps->pdata = pdata;
+ tps->regmap = regmap_init_i2c(client, &tps65217_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ ret = PTR_ERR(tps->regmap);
+ dev_err(tps->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ i2c_set_clientdata(client, tps);
+ tps->dev = &client->dev;
+
+ ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version);
+ if (ret < 0) {
+ dev_err(tps->dev, "Failed to read revision"
+ " register: %d\n", ret);
+ goto err_regmap;
+ }
+
+ dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
+ (version & TPS65217_CHIPID_CHIP_MASK) >> 4,
+ version & TPS65217_CHIPID_REV_MASK);
+
+ for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {
+ struct platform_device *pdev;
+
+ pdev = platform_device_alloc("tps65217-pmic", i);
+ if (!pdev) {
+ dev_err(tps->dev, "Cannot create regulator %d\n", i);
+ continue;
+ }
+
+ pdev->dev.parent = tps->dev;
+ platform_device_add_data(pdev, &pdata->tps65217_init_data[i],
+ sizeof(pdata->tps65217_init_data[i]));
+ tps->regulator_pdev[i] = pdev;
+
+ platform_device_add(pdev);
+ }
+
+ return 0;
+
+err_regmap:
+ regmap_exit(tps->regmap);
+
+ return ret;
+}
+
+static int __devexit tps65217_remove(struct i2c_client *client)
+{
+ struct tps65217 *tps = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i < TPS65217_NUM_REGULATOR; i++)
+ platform_device_unregister(tps->regulator_pdev[i]);
+
+ regmap_exit(tps->regmap);
+
+ return 0;
+}
+
+static const struct i2c_device_id tps65217_id_table[] = {
+ {"tps65217", 0xF0},
+ {/* end of list */}
+};
+MODULE_DEVICE_TABLE(i2c, tps65217_id_table);
+
+static struct i2c_driver tps65217_driver = {
+ .driver = {
+ .name = "tps65217",
+ },
+ .id_table = tps65217_id_table,
+ .probe = tps65217_probe,
+ .remove = __devexit_p(tps65217_remove),
+};
+
+static int __init tps65217_init(void)
+{
+ return i2c_add_driver(&tps65217_driver);
+}
+subsys_initcall(tps65217_init);
+
+static void __exit tps65217_exit(void)
+{
+ i2c_del_driver(&tps65217_driver);
+}
+module_exit(tps65217_exit);
+
+MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
+MODULE_DESCRIPTION("TPS65217 chip family multi-function driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h
new file mode 100644
index 0000000..e030ef9
--- /dev/null
+++ b/include/linux/mfd/tps65217.h
@@ -0,0 +1,283 @@
+/*
+ * linux/mfd/tps65217.h
+ *
+ * Functions to access TPS65217 power management chip.
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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.
+ */
+
+#ifndef __LINUX_MFD_TPS65217_H
+#define __LINUX_MFD_TPS65217_H
+
+#include <linux/i2c.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+/* I2C ID for TPS65217 part */
+#define TPS65217_I2C_ID 0x24
+
+/* All register addresses */
+#define TPS65217_REG_CHIPID 0X00
+#define TPS65217_REG_PPATH 0X01
+#define TPS65217_REG_INT 0X02
+#define TPS65217_REG_CHGCONFIG0 0X03
+#define TPS65217_REG_CHGCONFIG1 0X04
+#define TPS65217_REG_CHGCONFIG2 0X05
+#define TPS65217_REG_CHGCONFIG3 0X06
+#define TPS65217_REG_WLEDCTRL1 0X07
+#define TPS65217_REG_WLEDCTRL2 0X08
+#define TPS65217_REG_MUXCTRL 0X09
+#define TPS65217_REG_STATUS 0X0A
+#define TPS65217_REG_PASSWORD 0X0B
+#define TPS65217_REG_PGOOD 0X0C
+#define TPS65217_REG_DEFPG 0X0D
+#define TPS65217_REG_DEFDCDC1 0X0E
+#define TPS65217_REG_DEFDCDC2 0X0F
+#define TPS65217_REG_DEFDCDC3 0X10
+#define TPS65217_REG_DEFSLEW 0X11
+#define TPS65217_REG_DEFLDO1 0X12
+#define TPS65217_REG_DEFLDO2 0X13
+#define TPS65217_REG_DEFLS1 0X14
+#define TPS65217_REG_DEFLS2 0X15
+#define TPS65217_REG_ENABLE 0X16
+#define TPS65217_REG_DEFUVLO 0X18
+#define TPS65217_REG_SEQ1 0X19
+#define TPS65217_REG_SEQ2 0X1A
+#define TPS65217_REG_SEQ3 0X1B
+#define TPS65217_REG_SEQ4 0X1C
+#define TPS65217_REG_SEQ5 0X1D
+#define TPS65217_REG_SEQ6 0X1E
+
+/* Register field definitions */
+#define TPS65217_CHIPID_CHIP_MASK 0xF0
+#define TPS65217_CHIPID_REV_MASK 0x0F
+
+#define TPS65217_PPATH_ACSINK_ENABLE BIT(7)
+#define TPS65217_PPATH_USBSINK_ENABLE BIT(6)
+#define TPS65217_PPATH_AC_PW_ENABLE BIT(5)
+#define TPS65217_PPATH_USB_PW_ENABLE BIT(4)
+#define TPS65217_PPATH_AC_CURRENT_MASK 0x0C
+#define TPS65217_PPATH_USB_CURRENT_MASK 0x03
+
+#define TPS65217_INT_PBM BIT(6)
+#define TPS65217_INT_ACM BIT(5)
+#define TPS65217_INT_USBM BIT(4)
+#define TPS65217_INT_PBI BIT(2)
+#define TPS65217_INT_ACI BIT(1)
+#define TPS65217_INT_USBI BIT(0)
+
+#define TPS65217_CHGCONFIG0_TREG BIT(7)
+#define TPS65217_CHGCONFIG0_DPPM BIT(6)
+#define TPS65217_CHGCONFIG0_TSUSP BIT(5)
+#define TPS65217_CHGCONFIG0_TERMI BIT(4)
+#define TPS65217_CHGCONFIG0_ACTIVE BIT(3)
+#define TPS65217_CHGCONFIG0_CHGTOUT BIT(2)
+#define TPS65217_CHGCONFIG0_PCHGTOUT BIT(1)
+#define TPS65217_CHGCONFIG0_BATTEMP BIT(0)
+
+#define TPS65217_CHGCONFIG1_TMR_MASK 0xC0
+#define TPS65217_CHGCONFIG1_TMR_ENABLE BIT(5)
+#define TPS65217_CHGCONFIG1_NTC_TYPE BIT(4)
+#define TPS65217_CHGCONFIG1_RESET BIT(3)
+#define TPS65217_CHGCONFIG1_TERM BIT(2)
+#define TPS65217_CHGCONFIG1_SUSP BIT(1)
+#define TPS65217_CHGCONFIG1_CHG_EN BIT(0)
+
+#define TPS65217_CHGCONFIG2_DYNTMR BIT(7)
+#define TPS65217_CHGCONFIG2_VPREGHG BIT(6)
+#define TPS65217_CHGCONFIG2_VOREG_MASK 0x30
+
+#define TPS65217_CHGCONFIG3_ICHRG_MASK 0xC0
+#define TPS65217_CHGCONFIG3_DPPMTH_MASK 0x30
+#define TPS65217_CHGCONFIG2_PCHRGT BIT(3)
+#define TPS65217_CHGCONFIG2_TERMIF 0x06
+#define TPS65217_CHGCONFIG2_TRANGE BIT(0)
+
+#define TPS65217_WLEDCTRL1_ISINK_ENABLE BIT(3)
+#define TPS65217_WLEDCTRL1_ISEL BIT(2)
+#define TPS65217_WLEDCTRL1_FDIM_MASK 0x03
+
+#define TPS65217_WLEDCTRL2_DUTY_MASK 0x7F
+
+#define TPS65217_MUXCTRL_MUX_MASK 0x07
+
+#define TPS65217_STATUS_OFF BIT(7)
+#define TPS65217_STATUS_ACPWR BIT(3)
+#define TPS65217_STATUS_USBPWR BIT(2)
+#define TPS65217_STATUS_PB BIT(0)
+
+#define TPS65217_PASSWORD_REGS_UNLOCK 0x7D
+
+#define TPS65217_PGOOD_LDO3_PG BIT(6)
+#define TPS65217_PGOOD_LDO4_PG BIT(5)
+#define TPS65217_PGOOD_DC1_PG BIT(4)
+#define TPS65217_PGOOD_DC2_PG BIT(3)
+#define TPS65217_PGOOD_DC3_PG BIT(2)
+#define TPS65217_PGOOD_LDO1_PG BIT(1)
+#define TPS65217_PGOOD_LDO2_PG BIT(0)
+
+#define TPS65217_DEFPG_LDO1PGM BIT(3)
+#define TPS65217_DEFPG_LDO2PGM BIT(2)
+#define TPS65217_DEFPG_PGDLY_MASK 0x03
+
+#define TPS65217_DEFDCDCX_XADJX BIT(7)
+#define TPS65217_DEFDCDCX_DCDC_MASK 0x3F
+
+#define TPS65217_DEFSLEW_GO BIT(7)
+#define TPS65217_DEFSLEW_GODSBL BIT(6)
+#define TPS65217_DEFSLEW_PFM_EN1 BIT(5)
+#define TPS65217_DEFSLEW_PFM_EN2 BIT(4)
+#define TPS65217_DEFSLEW_PFM_EN3 BIT(3)
+#define TPS65217_DEFSLEW_SLEW_MASK 0x07
+
+#define TPS65217_DEFLDO1_LDO1_MASK 0x0F
+
+#define TPS65217_DEFLDO2_TRACK BIT(6)
+#define TPS65217_DEFLDO2_LDO2_MASK 0x3F
+
+#define TPS65217_DEFLDO3_LDO3_EN BIT(5)
+#define TPS65217_DEFLDO3_LDO3_MASK 0x1F
+
+#define TPS65217_DEFLDO4_LDO4_EN BIT(5)
+#define TPS65217_DEFLDO4_LDO4_MASK 0x1F
+
+#define TPS65217_ENABLE_LS1_EN BIT(6)
+#define TPS65217_ENABLE_LS2_EN BIT(5)
+#define TPS65217_ENABLE_DC1_EN BIT(4)
+#define TPS65217_ENABLE_DC2_EN BIT(3)
+#define TPS65217_ENABLE_DC3_EN BIT(2)
+#define TPS65217_ENABLE_LDO1_EN BIT(1)
+#define TPS65217_ENABLE_LDO2_EN BIT(0)
+
+#define TPS65217_DEFUVLO_UVLOHYS BIT(2)
+#define TPS65217_DEFUVLO_UVLO_MASK 0x03
+
+#define TPS65217_SEQ1_DC1_SEQ_MASK 0xF0
+#define TPS65217_SEQ1_DC2_SEQ_MASK 0x0F
+
+#define TPS65217_SEQ2_DC3_SEQ_MASK 0xF0
+#define TPS65217_SEQ2_LDO1_SEQ_MASK 0x0F
+
+#define TPS65217_SEQ3_LDO2_SEQ_MASK 0xF0
+#define TPS65217_SEQ3_LDO3_SEQ_MASK 0x0F
+
+#define TPS65217_SEQ4_LDO4_SEQ_MASK 0xF0
+
+#define TPS65217_SEQ5_DLY1_MASK 0xC0
+#define TPS65217_SEQ5_DLY2_MASK 0x30
+#define TPS65217_SEQ5_DLY3_MASK 0x0C
+#define TPS65217_SEQ5_DLY4_MASK 0x03
+
+#define TPS65217_SEQ6_DLY5_MASK 0xC0
+#define TPS65217_SEQ6_DLY6_MASK 0x30
+#define TPS65217_SEQ6_SEQUP BIT(2)
+#define TPS65217_SEQ6_SEQDWN BIT(1)
+#define TPS65217_SEQ6_INSTDWN BIT(0)
+
+#define TPS65217_MAX_REGISTER 0x1E
+#define TPS65217_PROTECT_NONE 0
+#define TPS65217_PROTECT_L1 1
+#define TPS65217_PROTECT_L2 2
+
+
+enum tps65217_regulator_id {
+ /* DCDC's */
+ TPS65217_DCDC_1,
+ TPS65217_DCDC_2,
+ TPS65217_DCDC_3,
+ /* LDOs */
+ TPS65217_LDO_1,
+ TPS65217_LDO_2,
+ TPS65217_LDO_3,
+ TPS65217_LDO_4,
+};
+
+#define TPS65217_MAX_REG_ID TPS65217_LDO_4
+
+/* Number of step-down converters available */
+#define TPS65217_NUM_DCDC 3
+/* Number of LDO voltage regulators available */
+#define TPS65217_NUM_LDO 4
+/* Number of total regulators available */
+#define TPS65217_NUM_REGULATOR (TPS65217_NUM_DCDC + TPS65217_NUM_LDO)
+
+/**
+ * struct tps65217_board - packages regulator init data
+ * @tps65217_regulator_data: regulator initialization values
+ *
+ * Board data may be used to initialize regulator.
+ */
+struct tps65217_board {
+ struct regulator_init_data *tps65217_init_data;
+};
+
+/**
+ * struct tps_info - packages regulator constraints
+ * @name: Voltage regulator name
+ * @min_uV: minimum micro volts
+ * @max_uV: minimum micro volts
+ * @vsel_to_uv: Function pointer to get voltage from selector
+ * @uv_to_vsel: Function pointer to get selector from voltage
+ * @table: Table for non-uniform voltage step-size
+ * @table_len: Length of the voltage table
+ * @enable_mask: Regulator enable mask bits
+ * @set_vout_reg: Regulator output voltage set register
+ * @set_vout_mask: Regulator output voltage set mask
+ *
+ * This data is used to check the regualtor voltage limits while setting.
+ */
+struct tps_info {
+ const char *name;
+ int min_uV;
+ int max_uV;
+ int (*vsel_to_uv)(unsigned int vsel);
+ int (*uv_to_vsel)(int uV, unsigned int *vsel);
+ const int *table;
+ unsigned int table_len;
+ unsigned int enable_mask;
+ unsigned int set_vout_reg;
+ unsigned int set_vout_mask;
+};
+
+/**
+ * struct tps65217 - tps65217 sub-driver chip access routines
+ *
+ * Device data may be used to access the TPS65217 chip
+ */
+
+struct tps65217 {
+ struct device *dev;
+ struct tps65217_board *pdata;
+ struct regulator_desc desc[TPS65217_NUM_REGULATOR];
+ struct regulator_dev *rdev[TPS65217_NUM_REGULATOR];
+ struct tps_info *info[TPS65217_NUM_REGULATOR];
+ struct regmap *regmap;
+
+ /* Client devices */
+ struct platform_device *regulator_pdev[TPS65217_NUM_REGULATOR];
+};
+
+static inline struct tps65217 *dev_to_tps65217(struct device *dev)
+{
+ return dev_get_drvdata(dev);
+}
+
+int tps65217_reg_read(struct tps65217 *tps, unsigned int reg,
+ unsigned int *val);
+int tps65217_reg_write(struct tps65217 *tps, unsigned int reg,
+ unsigned int val, unsigned int level);
+int tps65217_set_bits(struct tps65217 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val, unsigned int level);
+int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
+ unsigned int mask, unsigned int level);
+
+#endif /* __LINUX_MFD_TPS65217_H */
--
1.7.0.4


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