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Message-id: <1336972830-15169-1-git-send-email-cw00.choi@samsung.com>
Date: Mon, 14 May 2012 14:20:30 +0900
From: Chanwoo Choi <cw00.choi@...sung.com>
To: sameo@...ux.intel.com
Cc: myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
jonghwa3.lee@...sung.com, broonie@...nsource.wolfsonmicro.com,
linux-kernel@...r.kernel.org, Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH v3 1/2] MFD: MAX77693: add MAX77693 MFD driver
This patch adds MFD driver for MAX77693 to enable its sub devices.
The MAX77693 is a multi-function devices. It includes PMIC,
MUIC(Micro USB Interface Controller), flash LED control and
haptic motor control.
Signef-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.com>
Signed-off0by: Kyungmin Park <kyungmin.park@...sung.com>
---
drivers/mfd/Kconfig | 12 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/max77693.c | 221 ++++++++++++++++++++++++++++++++++
include/linux/mfd/max77693-private.h | 217 +++++++++++++++++++++++++++++++++
include/linux/mfd/max77693.h | 37 ++++++
5 files changed, 488 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/max77693.c
create mode 100644 include/linux/mfd/max77693-private.h
create mode 100644 include/linux/mfd/max77693.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 11e4438..a8619eb 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -452,6 +452,18 @@ config MFD_S5M_CORE
additional drivers must be enabled in order to use the functionality
of the device
+config MFD_MAX77693
+ bool "Maxim Semiconductor MAX77693 PMIC Support"
+ depends on I2C=y && GENERIC_HARDIRQS
+ select MFD_CORE
+ help
+ Say yes here to support for Maxim Semiconductor MAX77693.
+ This is a companion Power Management IC with Flash, Haptic, Charger,
+ and MUIC(Micro USB Interface Controller) controls on chip.
+ This driver provides common support for accessing the device;
+ additional drivers must be enabled in order to use the functionality
+ of the device.
+
config MFD_WM8400
tristate "Support Wolfson Microelectronics WM8400"
select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 05fa538..ae18cf1 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -79,6 +79,7 @@ max8925-objs := max8925-core.o max8925-i2c.o
obj-$(CONFIG_MFD_MAX8925) += max8925.o
obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o
obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o
+obj-$(CONFIG_MFD_MAX77693) += max77693.o
pcf50633-objs := pcf50633-core.o pcf50633-irq.o
obj-$(CONFIG_MFD_PCF50633) += pcf50633.o
diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
new file mode 100644
index 0000000..bf28e12
--- /dev/null
+++ b/drivers/mfd/max77693.c
@@ -0,0 +1,221 @@
+/*
+ * max77693.c - mfd core driver for the MAX 77693
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * SangYoung Son <hello.son@...sung.com>
+ *
+ * This program is not provided / owned by Maxim Integrated Products.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max8997.c
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+#include <linux/mutex.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/max77693.h>
+#include <linux/mfd/max77693-private.h>
+#include <linux/regulator/machine.h>
+#include <linux/regmap.h>
+
+#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
+#define I2C_ADDR_MUIC (0x4A >> 1)
+#define I2C_ADDR_HAPTIC (0x90 >> 1)
+
+static struct mfd_cell max77693_devs[] = {
+ { .name = "max77693-pmic", },
+ { .name = "max77693-charger", },
+ { .name = "max77693-flash", },
+ { .name = "max77693-muic", },
+ { .name = "max77693-haptic", },
+};
+
+int max77693_read_reg(struct regmap *map, u8 reg, u8 *dest)
+{
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(map, reg, &val);
+ val &= 0xff;
+ *dest = val;
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(max77693_read_reg);
+
+int max77693_bulk_read(struct regmap *map, u8 reg, int count, u8 *buf)
+{
+ int ret;
+
+ ret = regmap_bulk_read(map, reg, buf, count);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(max77693_bulk_read);
+
+int max77693_write_reg(struct regmap *map, u8 reg, u8 value)
+{
+ int ret;
+
+ ret = regmap_write(map, reg, value);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(max77693_write_reg);
+
+int max77693_bulk_write(struct regmap *map, u8 reg, int count, u8 *buf)
+{
+ int ret;
+
+ ret = regmap_bulk_write(map, reg, buf, count);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(max77693_bulk_write);
+
+int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask)
+{
+ unsigned int old_val, new_val;
+ int ret;
+
+ ret = regmap_read(map, reg, &old_val);
+ old_val &= 0xff;
+ new_val = (val & mask) | (old_val & (~mask));
+ ret = regmap_write(map, reg, new_val);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(max77693_update_reg);
+
+static struct regmap_config max77693_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int max77693_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct max77693_dev *max77693;
+ struct max77693_platform_data *pdata = i2c->dev.platform_data;
+ u8 reg_data;
+ int ret = 0;
+
+ max77693 = devm_kzalloc(&i2c->dev,
+ sizeof(struct max77693_dev), GFP_KERNEL);
+ if (max77693 == NULL)
+ return -ENOMEM;
+
+ max77693->regmap = regmap_init_i2c(i2c, &max77693_regmap_config);
+ if (IS_ERR(max77693->regmap)) {
+ ret = PTR_ERR(max77693->regmap);
+ dev_err(max77693->dev,"failed to allocate register map: %d\n",
+ ret);
+ goto err_regmap;
+ }
+
+ i2c_set_clientdata(i2c, max77693);
+ max77693->dev = &i2c->dev;
+ max77693->i2c = i2c;
+ max77693->irq = i2c->irq;
+ max77693->type = id->driver_data;
+
+ if (!pdata)
+ goto err_regmap;
+
+ max77693->wakeup = pdata->wakeup;
+
+ mutex_init(&max77693->iolock);
+
+ if (max77693_read_reg(max77693->regmap,
+ MAX77693_PMIC_REG_PMIC_ID2, ®_data) < 0) {
+ dev_err(max77693->dev, "device not found on this channel\n");
+ ret = -ENODEV;
+ goto err_regmap;
+ } else
+ dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
+
+ max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
+ i2c_set_clientdata(max77693->muic, max77693);
+
+ max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
+ i2c_set_clientdata(max77693->haptic, max77693);
+
+ pm_runtime_set_active(max77693->dev);
+
+ ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
+ ARRAY_SIZE(max77693_devs), NULL, 0);
+ if (ret < 0)
+ goto err_mfd;
+
+ return ret;
+
+err_mfd:
+ i2c_unregister_device(max77693->muic);
+ i2c_unregister_device(max77693->haptic);
+err_regmap:
+ kfree(max77693);
+
+ return ret;
+}
+
+static int max77693_i2c_remove(struct i2c_client *i2c)
+{
+ struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
+
+ mfd_remove_devices(max77693->dev);
+ i2c_unregister_device(max77693->muic);
+ i2c_unregister_device(max77693->haptic);
+
+ return 0;
+}
+
+static const struct i2c_device_id max77693_i2c_id[] = {
+ { "max77693", TYPE_MAX77693 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
+
+static struct i2c_driver max77693_i2c_driver = {
+ .driver = {
+ .name = "max77693",
+ .owner = THIS_MODULE,
+ },
+ .probe = max77693_i2c_probe,
+ .remove = max77693_i2c_remove,
+ .id_table = max77693_i2c_id,
+};
+
+static int __init max77693_i2c_init(void)
+{
+ return i2c_add_driver(&max77693_i2c_driver);
+}
+/* init early so consumer devices can complete system boot */
+subsys_initcall(max77693_i2c_init);
+
+static void __exit max77693_i2c_exit(void)
+{
+ i2c_del_driver(&max77693_i2c_driver);
+}
+module_exit(max77693_i2c_exit);
+
+MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
+MODULE_AUTHOR("SangYoung, Son <hello.son@...sung.com>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h
new file mode 100644
index 0000000..bf6077d
--- /dev/null
+++ b/include/linux/mfd/max77693-private.h
@@ -0,0 +1,217 @@
+/*
+ * max77693-private.h - Voltage regulator driver for the Maxim 77693
+ *
+ * Copyright (C) 2012 Samsung Electrnoics
+ * SangYoung Son <hello.son@...sung.com>
+ *
+ * This program is not provided / owned by Maxim Integrated Products.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __LINUX_MFD_MAX77693_PRIV_H
+#define __LINUX_MFD_MAX77693_PRIV_H
+
+#include <linux/i2c.h>
+
+#define MAX77693_NUM_IRQ_MUIC_REGS 3
+#define MAX77693_REG_INVALID (0xff)
+
+/* Slave addr = 0xCC: PMIC, Charger, Flash LED */
+enum max77693_pmic_reg {
+ MAX77693_LED_REG_IFLASH1 = 0x00,
+ MAX77693_LED_REG_IFLASH2 = 0x01,
+ MAX77693_LED_REG_ITORCH = 0x02,
+ MAX77693_LED_REG_ITORCHTIMER = 0x03,
+ MAX77693_LED_REG_FLASH_TIMER = 0x04,
+ MAX77693_LED_REG_FLASH_EN = 0x05,
+ MAX77693_LED_REG_MAX_FLASH1 = 0x06,
+ MAX77693_LED_REG_MAX_FLASH2 = 0x07,
+ MAX77693_LED_REG_MAX_FLASH3 = 0x08,
+ MAX77693_LED_REG_MAX_FLASH4 = 0x09,
+ MAX77693_LED_REG_VOUT_CNTL = 0x0A,
+ MAX77693_LED_REG_VOUT_FLASH1 = 0x0B,
+ MAX77693_LED_REG_VOUT_FLASH2 = 0x0C,
+ MAX77693_LED_REG_FLASH_INT = 0x0E,
+ MAX77693_LED_REG_FLASH_INT_MASK = 0x0F,
+ MAX77693_LED_REG_FLASH_INT_STATUS = 0x10,
+
+ MAX77693_PMIC_REG_PMIC_ID1 = 0x20,
+ MAX77693_PMIC_REG_PMIC_ID2 = 0x21,
+ MAX77693_PMIC_REG_INTSRC = 0x22,
+ MAX77693_PMIC_REG_INTSRC_MASK = 0x23,
+ MAX77693_PMIC_REG_TOPSYS_INT = 0x24,
+ MAX77693_PMIC_REG_TOPSYS_INT_MASK = 0x26,
+ MAX77693_PMIC_REG_TOPSYS_STAT = 0x28,
+ MAX77693_PMIC_REG_MAINCTRL1 = 0x2A,
+ MAX77693_PMIC_REG_LSCNFG = 0x2B,
+
+ MAX77693_CHG_REG_CHG_INT = 0xB0,
+ MAX77693_CHG_REG_CHG_INT_MASK = 0xB1,
+ MAX77693_CHG_REG_CHG_INT_OK = 0xB2,
+ MAX77693_CHG_REG_CHG_DETAILS_00 = 0xB3,
+ MAX77693_CHG_REG_CHG_DETAILS_01 = 0xB4,
+ MAX77693_CHG_REG_CHG_DETAILS_02 = 0xB5,
+ MAX77693_CHG_REG_CHG_DETAILS_03 = 0xB6,
+ MAX77693_CHG_REG_CHG_CNFG_00 = 0xB7,
+ MAX77693_CHG_REG_CHG_CNFG_01 = 0xB8,
+ MAX77693_CHG_REG_CHG_CNFG_02 = 0xB9,
+ MAX77693_CHG_REG_CHG_CNFG_03 = 0xBA,
+ MAX77693_CHG_REG_CHG_CNFG_04 = 0xBB,
+ MAX77693_CHG_REG_CHG_CNFG_05 = 0xBC,
+ MAX77693_CHG_REG_CHG_CNFG_06 = 0xBD,
+ MAX77693_CHG_REG_CHG_CNFG_07 = 0xBE,
+ MAX77693_CHG_REG_CHG_CNFG_08 = 0xBF,
+ MAX77693_CHG_REG_CHG_CNFG_09 = 0xC0,
+ MAX77693_CHG_REG_CHG_CNFG_10 = 0xC1,
+ MAX77693_CHG_REG_CHG_CNFG_11 = 0xC2,
+ MAX77693_CHG_REG_CHG_CNFG_12 = 0xC3,
+ MAX77693_CHG_REG_CHG_CNFG_13 = 0xC4,
+ MAX77693_CHG_REG_CHG_CNFG_14 = 0xC5,
+ MAX77693_CHG_REG_SAFEOUT_CTRL = 0xC6,
+
+ MAX77693_PMIC_REG_END,
+};
+
+/* Slave addr = 0x4A: MUIC */
+enum max77693_muic_reg {
+ MAX77693_MUIC_REG_ID = 0x00,
+ MAX77693_MUIC_REG_INT1 = 0x01,
+ MAX77693_MUIC_REG_INT2 = 0x02,
+ MAX77693_MUIC_REG_INT3 = 0x03,
+ MAX77693_MUIC_REG_STATUS1 = 0x04,
+ MAX77693_MUIC_REG_STATUS2 = 0x05,
+ MAX77693_MUIC_REG_STATUS3 = 0x06,
+ MAX77693_MUIC_REG_INTMASK1 = 0x07,
+ MAX77693_MUIC_REG_INTMASK2 = 0x08,
+ MAX77693_MUIC_REG_INTMASK3 = 0x09,
+ MAX77693_MUIC_REG_CDETCTRL1 = 0x0A,
+ MAX77693_MUIC_REG_CDETCTRL2 = 0x0B,
+ MAX77693_MUIC_REG_CTRL1 = 0x0C,
+ MAX77693_MUIC_REG_CTRL2 = 0x0D,
+ MAX77693_MUIC_REG_CTRL3 = 0x0E,
+
+ MAX77693_MUIC_REG_END,
+};
+
+/* Slave addr = 0x90: Haptic */
+enum max77693_haptic_reg {
+ MAX77693_HAPTIC_REG_STATUS = 0x00,
+ MAX77693_HAPTIC_REG_CONFIG1 = 0x01,
+ MAX77693_HAPTIC_REG_CONFIG2 = 0x02,
+ MAX77693_HAPTIC_REG_CONFIG_CHNL = 0x03,
+ MAX77693_HAPTIC_REG_CONFG_CYC1 = 0x04,
+ MAX77693_HAPTIC_REG_CONFG_CYC2 = 0x05,
+ MAX77693_HAPTIC_REG_CONFIG_PER1 = 0x06,
+ MAX77693_HAPTIC_REG_CONFIG_PER2 = 0x07,
+ MAX77693_HAPTIC_REG_CONFIG_PER3 = 0x08,
+ MAX77693_HAPTIC_REG_CONFIG_PER4 = 0x09,
+ MAX77693_HAPTIC_REG_CONFIG_DUTY1 = 0x0A,
+ MAX77693_HAPTIC_REG_CONFIG_DUTY2 = 0x0B,
+ MAX77693_HAPTIC_REG_CONFIG_PWM1 = 0x0C,
+ MAX77693_HAPTIC_REG_CONFIG_PWM2 = 0x0D,
+ MAX77693_HAPTIC_REG_CONFIG_PWM3 = 0x0E,
+ MAX77693_HAPTIC_REG_CONFIG_PWM4 = 0x0F,
+ MAX77693_HAPTIC_REG_REV = 0x10,
+
+ MAX77693_HAPTIC_REG_END,
+};
+
+enum max77693_irq_source {
+ LED_INT = 0,
+ TOPSYS_INT,
+ CHG_INT,
+ MUIC_INT1,
+ MUIC_INT2,
+ MUIC_INT3,
+
+ MAX77693_IRQ_GROUP_NR,
+};
+
+enum max77693_irq {
+ /* PMIC - FLASH */
+ MAX77693_LED_IRQ_FLED2_OPEN,
+ MAX77693_LED_IRQ_FLED2_SHORT,
+ MAX77693_LED_IRQ_FLED1_OPEN,
+ MAX77693_LED_IRQ_FLED1_SHORT,
+ MAX77693_LED_IRQ_MAX_FLASH,
+
+ /* PMIC - TOPSYS */
+ MAX77693_TOPSYS_IRQ_T120C_INT,
+ MAX77693_TOPSYS_IRQ_T140C_INT,
+ MAX77693_TOPSYS_IRQ_LOWSYS_INT,
+
+ /* PMIC - Charger */
+ MAX77693_CHG_IRQ_BYP_I,
+ MAX77693_CHG_IRQ_THM_I,
+ MAX77693_CHG_IRQ_BAT_I,
+ MAX77693_CHG_IRQ_CHG_I,
+ MAX77693_CHG_IRQ_CHGIN_I,
+
+ /* MUIC INT1 */
+ MAX77693_MUIC_IRQ_INT1_ADC,
+ MAX77693_MUIC_IRQ_INT1_ADC_LOW,
+ MAX77693_MUIC_IRQ_INT1_ADC_ERR,
+ MAX77693_MUIC_IRQ_INT1_ADC1K,
+
+ /* MUIC INT2 */
+ MAX77693_MUIC_IRQ_INT2_CHGTYP,
+ MAX77693_MUIC_IRQ_INT2_CHGDETREUN,
+ MAX77693_MUIC_IRQ_INT2_DCDTMR,
+ MAX77693_MUIC_IRQ_INT2_DXOVP,
+ MAX77693_MUIC_IRQ_INT2_VBVOLT,
+ MAX77693_MUIC_IRQ_INT2_VIDRM,
+
+ /* MUIC INT3 */
+ MAX77693_MUIC_IRQ_INT3_EOC,
+ MAX77693_MUIC_IRQ_INT3_CGMBC,
+ MAX77693_MUIC_IRQ_INT3_OVP,
+ MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR,
+ MAX77693_MUIC_IRQ_INT3_CHG_ENABLED,
+ MAX77693_MUIC_IRQ_INT3_BAT_DET,
+
+ MAX77693_IRQ_NR,
+};
+
+struct max77693_dev {
+ struct device *dev;
+ struct i2c_client *i2c; /* 0xCC , PMIC, Charger, Flash LED */
+ struct i2c_client *muic; /* 0x4A , MUIC */
+ struct i2c_client *haptic; /* 0x90 , Haptic */
+ struct mutex iolock;
+
+ int type;
+
+ struct regmap *regmap;
+ struct regmap *regmap_muic;
+ struct regmap *regmap_haptic;
+
+ int irq;
+ bool wakeup;
+};
+
+enum max77693_types {
+ TYPE_MAX77693,
+};
+
+extern int max77693_read_reg(struct regmap *map, u8 reg, u8 *dest);
+extern int max77693_bulk_read(struct regmap *map, u8 reg, int count,
+ u8 *buf);
+extern int max77693_write_reg(struct regmap *map, u8 reg, u8 value);
+extern int max77693_bulk_write(struct regmap *map, u8 reg, int count,
+ u8 *buf);
+extern int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask);
+
+#endif /* __LINUX_MFD_MAX77693_PRIV_H */
diff --git a/include/linux/mfd/max77693.h b/include/linux/mfd/max77693.h
new file mode 100644
index 0000000..5020b86
--- /dev/null
+++ b/include/linux/mfd/max77693.h
@@ -0,0 +1,37 @@
+/*
+ * max77693.h - Driver for the Maxim 77693
+ *
+ * Copyright (C) 2012 Samsung Electrnoics
+ * SangYoung Son <hello.son@...sung.com>
+ *
+ * This program is not provided / owned by Maxim Integrated Products.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max8997.h
+ *
+ * MAX77693 has PMIC, Charger, Flash LED, Haptic, MUIC devices.
+ * The devices share the same I2C bus and included in
+ * this mfd driver.
+ */
+
+#ifndef __LINUX_MFD_MAX77693_H
+#define __LINUX_MFD_MAX77693_H
+
+struct max77693_platform_data {
+ /* IRQ */
+ int wakeup;
+};
+#endif /* __LINUX_MFD_MAX77693_H */
--
1.7.0.4
--
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