548 lines
13 KiB
C
Executable File
548 lines
13 KiB
C
Executable File
/*
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* sm5713_core.c - mfd core driver for the SM5713.
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*
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* Copyright (C) 2017 Samsung Electronics Co.Ltd
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/irq.h>
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#include <linux/interrupt.h>
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#include <linux/mutex.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/sm5713.h>
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#include <linux/mfd/sm5713-private.h>
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#include <linux/regulator/machine.h>
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#if defined (CONFIG_OF)
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/pinctrl/consumer.h>
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#endif /* CONFIG_OF */
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static struct mfd_cell sm5713_devs[] = {
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#if defined(CONFIG_MUIC_SM5713)
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{ .name = "sm5713-muic", },
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#endif /* CONFIG_MUIC_SM5713 */
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#if defined(CONFIG_FUELGAUGE_SM5713)
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{ .name = "sm5713-fuelgauge", },
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#endif /* CONFIG_FUELGAUGE_SM5713 */
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#if defined(CONFIG_CHARGER_SM5713)
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{ .name = "sm5713-charger", },
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#endif /* CONFIG_CHARGER_SM5713 */
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#if defined(CONFIG_LEDS_SM5713_RGB)
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{ .name = "sm5713-rgb", },
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#endif
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#if defined(CONFIG_LEDS_SM5713)
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{ .name = "sm5713-fled", },
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#endif /* CONFIG_LEDS_SM5713 */
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};
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int sm5713_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_read_byte_data(i2c, reg);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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mutex_unlock(&sm5713->i2c_lock);
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if (ret < 0) {
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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return ret;
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}
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*dest = (ret & 0xff);
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return 0;
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}
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EXPORT_SYMBOL_GPL(sm5713_read_reg);
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int sm5713_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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mutex_unlock(&sm5713->i2c_lock);
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if (ret < 0)
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return ret;
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return 0;
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}
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EXPORT_SYMBOL_GPL(sm5713_bulk_read);
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int sm5713_read_word(struct i2c_client *i2c, u8 reg)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_read_word_data(i2c, reg);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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mutex_unlock(&sm5713->i2c_lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(sm5713_read_word);
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int sm5713_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_write_byte_data(i2c, reg, value);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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mutex_unlock(&sm5713->i2c_lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(sm5713_write_reg);
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int sm5713_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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mutex_unlock(&sm5713->i2c_lock);
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if (ret < 0)
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return ret;
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return 0;
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}
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EXPORT_SYMBOL_GPL(sm5713_bulk_write);
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int sm5713_write_word(struct i2c_client *i2c, u8 reg, u16 value)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_write_word_data(i2c, reg, value);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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mutex_unlock(&sm5713->i2c_lock);
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if (ret < 0)
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return ret;
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return 0;
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}
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EXPORT_SYMBOL_GPL(sm5713_write_word);
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int sm5713_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int ret, i;
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int retry = 3;
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mutex_lock(&sm5713->i2c_lock);
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_read_byte_data(i2c, reg);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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if (ret >= 0) {
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u8 old_val = ret & 0xff;
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u8 new_val = (val & mask) | (old_val & (~mask));
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for (i = 0; i < retry; i++) {
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ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
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if (ret >= 0)
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break;
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pr_info("%s:%s reg(0x%x), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret);
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}
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}
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mutex_unlock(&sm5713->i2c_lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(sm5713_update_reg);
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#if defined(CONFIG_OF)
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static int of_sm5713_dt(struct device *dev, struct sm5713_platform_data *pdata)
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{
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struct device_node *np_sm5713 = dev->of_node;
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if (!np_sm5713)
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return -EINVAL;
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pdata->irq_gpio = of_get_named_gpio(np_sm5713, "sm5713,irq-gpio", 0);
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pdata->wakeup = of_property_read_bool(np_sm5713, "sm5713,wakeup");
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pr_info("%s: irq-gpio: %u \n", __func__, pdata->irq_gpio);
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return 0;
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}
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#else
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static int of_sm5713_dt(struct device *dev, struct sm5713_platform_data *pdata)
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{
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return 0;
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}
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#endif /* CONFIG_OF */
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static int sm5713_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *dev_id)
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{
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struct sm5713_dev *sm5713;
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struct sm5713_platform_data *pdata = i2c->dev.platform_data;
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int ret = 0;
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u8 temp = 0;
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dev_info(&i2c->dev, "%s start\n", __func__);
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sm5713 = kzalloc(sizeof(struct sm5713_dev), GFP_KERNEL);
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if (!sm5713) {
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dev_err(&i2c->dev, "%s: Failed to alloc mem for sm5713\n",
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__func__);
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return -ENOMEM;
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}
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if (i2c->dev.of_node) {
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pdata = devm_kzalloc(&i2c->dev, sizeof(struct sm5713_platform_data), GFP_KERNEL);
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if (!pdata) {
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dev_err(&i2c->dev, "Failed to allocate memory\n");
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ret = -ENOMEM;
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goto err;
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}
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ret = of_sm5713_dt(&i2c->dev, pdata);
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if (ret < 0) {
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dev_err(&i2c->dev, "Failed to get device of_node\n");
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goto err;
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}
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i2c->dev.platform_data = pdata;
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} else {
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pdata = i2c->dev.platform_data;
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}
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sm5713->dev = &i2c->dev;
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sm5713->charger = i2c;
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sm5713->irq = i2c->irq;
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if (pdata) {
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sm5713->pdata = pdata;
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pdata->irq_base = irq_alloc_descs(-1, 0, SM5713_IRQ_NR, -1);
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if (pdata->irq_base < 0) {
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pr_err("%s:%s irq_alloc_descs Fail! ret(%d)\n",
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MFD_DEV_NAME, __func__, pdata->irq_base);
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ret = -EINVAL;
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goto err;
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} else {
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sm5713->irq_base = pdata->irq_base;
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}
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sm5713->irq_gpio = pdata->irq_gpio;
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sm5713->wakeup = pdata->wakeup;
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} else {
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ret = -EINVAL;
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goto err;
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}
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mutex_init(&sm5713->i2c_lock);
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i2c_set_clientdata(i2c, sm5713);
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/* Get Device ID & Check Charger I2C transmission */
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ret = sm5713_read_reg(i2c, SM5713_CHG_REG_DEVICEID, &temp);
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if (ret < 0 || (temp & 0x7) != 0x1) {
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pr_err("%s:%s device not found on this channel (reg_data=0x%x)\n", MFD_DEV_NAME, __func__, temp);
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ret = -ENODEV;
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goto err_w_lock;
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}
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sm5713->vender_id = (temp & 0x7);
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sm5713->pmic_rev = ((temp >> 3) & 0xF);
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pr_info("%s:%s v_id=0x%x, rev=0x%x\n",
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MFD_DEV_NAME, __func__, sm5713->vender_id, sm5713->pmic_rev);
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sm5713->fuelgauge = i2c_new_dummy(i2c->adapter, SM5713_I2C_SADR_FG);
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i2c_set_clientdata(sm5713->fuelgauge, sm5713);
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/* Check FG I2C transmission */
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ret = sm5713_read_word(sm5713->fuelgauge, SM5713_FG_REG_DEVICE_ID);
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if ((unsigned int)ret > 0xFF) {
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pr_err("%s:%s fail to setup FG I2C transmission (ret=0x%x)\n", MFD_DEV_NAME, __func__, ret);
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ret = -ENODEV;
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goto err_w_lock;
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}
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sm5713->muic = i2c_new_dummy(i2c->adapter, SM5713_I2C_SADR_MUIC);
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i2c_set_clientdata(sm5713->muic, sm5713);
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/* Check MUIC I2C transmission */
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ret = sm5713_read_reg(sm5713->muic, SM5713_MUIC_REG_DeviceID, &temp);
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if (ret < 0 || temp != 0x1) {
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pr_err("%s:%s fail to setup MUIC I2C transmission (reg_data=0x%x)\n", MFD_DEV_NAME, __func__, temp);
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ret = -ENODEV;
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goto err_w_lock;
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}
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ret = sm5713_irq_init(sm5713);
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if (ret < 0)
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goto err_irq_init;
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ret = mfd_add_devices(sm5713->dev, -1, sm5713_devs, ARRAY_SIZE(sm5713_devs), NULL, 0, NULL);
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if (ret < 0)
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goto err_mfd;
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device_init_wakeup(sm5713->dev, pdata->wakeup);
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pr_info("%s: %s done\n", MFD_DEV_NAME, __func__);
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return ret;
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err_mfd:
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mfd_remove_devices(sm5713->dev);
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sm5713_irq_exit(sm5713);
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err_irq_init:
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i2c_unregister_device(sm5713->fuelgauge);
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i2c_unregister_device(sm5713->muic);
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err_w_lock:
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mutex_destroy(&sm5713->i2c_lock);
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err:
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kfree(sm5713);
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return ret;
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}
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static int sm5713_i2c_remove(struct i2c_client *i2c)
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{
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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mfd_remove_devices(sm5713->dev);
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sm5713_irq_exit(sm5713);
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i2c_unregister_device(sm5713->muic);
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i2c_unregister_device(sm5713->fuelgauge);
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mutex_destroy(&sm5713->i2c_lock);
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kfree(sm5713);
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return 0;
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}
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static const struct i2c_device_id sm5713_i2c_id[] = {
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{ MFD_DEV_NAME, TYPE_SM5713 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, sm5713_i2c_id);
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#if defined(CONFIG_OF)
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static struct of_device_id sm5713_i2c_dt_ids[] = {
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{ .compatible = "siliconmitus,sm5713mfd" },
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{ },
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};
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MODULE_DEVICE_TABLE(of, sm5713_i2c_dt_ids);
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#endif /* CONFIG_OF */
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#if defined(CONFIG_PM)
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static int sm5713_suspend(struct device *dev)
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{
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struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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if (device_may_wakeup(dev))
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enable_irq_wake(sm5713->irq);
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disable_irq(sm5713->irq);
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return 0;
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}
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static int sm5713_resume(struct device *dev)
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{
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struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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#if !defined(CONFIG_SAMSUNG_PRODUCT_SHIP)
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pr_info("%s:%s\n", MFD_DEV_NAME, __func__);
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#endif /* CONFIG_SAMSUNG_PRODUCT_SHIP */
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if (device_may_wakeup(dev))
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disable_irq_wake(sm5713->irq);
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enable_irq(sm5713->irq);
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return 0;
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}
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#else
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#define sm5713_suspend NULL
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#define sm5713_resume NULL
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#endif /* CONFIG_PM */
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#ifdef CONFIG_HIBERNATION
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static u8 sm5713_dumpaddr_charger[] = {
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SM5713_CHG_REG_CNTL1,
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SM5713_CHG_REG_CNTL2,
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SM5713_CHG_REG_VBUSCNTL,
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SM5713_CHG_REG_CHGCNTL1,
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SM5713_CHG_REG_CHGCNTL2,
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SM5713_CHG_REG_CHGCNTL4,
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SM5713_CHG_REG_CHGCNTL5,
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SM5713_CHG_REG_CHGCNTL6,
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SM5713_CHG_REG_CHGCNTL7,
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SM5713_CHG_REG_CHGCNTL8,
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SM5713_CHG_REG_CHGCNTL9,
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SM5713_CHG_REG_CHGCNTL10,
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SM5713_CHG_REG_LED123MODE,
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SM5713_CHG_REG_LEDCNTL,
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SM5713_CHG_REG_LED1CNTL1,
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SM5713_CHG_REG_LED1CNTL2,
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SM5713_CHG_REG_LED1CNTL3,
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SM5713_CHG_REG_LED2CNTL1,
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SM5713_CHG_REG_LED2CNTL2,
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SM5713_CHG_REG_LED2CNTL3,
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SM5713_CHG_REG_LED3CNTL1,
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SM5713_CHG_REG_LED3CNTL2,
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SM5713_CHG_REG_LED3CNTL3,
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SM5713_CHG_REG_FLED1CNTL1,
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SM5713_CHG_REG_FLED1CNTL2,
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SM5713_CHG_REG_FLED2CNTL1,
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SM5713_CHG_REG_FLED2CNTL2,
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SM5713_CHG_REG_FLED3CNTL,
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};
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static u8 sm5713_dumpaddr_muic[] = {
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};
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static u8 sm5713_dumpaddr_fuelgauge[] = {
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};
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static int sm5713_freeze(struct device *dev)
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{
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struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
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struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
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int i;
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for (i = 0; i < ARRAY_SIZE(sm5713_dumpaddr_charger); i++)
|
|
sm5713_read_reg(sm5713->charger, sm5713_dumpaddr_charger[i],
|
|
&sm5713->reg_chg_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sm5713_dumpaddr_muic); i++)
|
|
sm5713_read_reg(sm5713->muic, sm5713_dumpaddr_muic[i],
|
|
&sm5713->reg_muic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sm5713_dumpaddr_fuelgauge); i++)
|
|
sm5713_read_word(sm5713->fuelgauge, sm5713_dumpaddr_fuelgauge[i],
|
|
&sm5713->reg_fg_dump[i]);
|
|
|
|
disable_irq(sm5713->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sm5713_restore(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
struct sm5713_dev *sm5713 = i2c_get_clientdata(i2c);
|
|
int i;
|
|
|
|
enable_irq(sm5713->irq);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sm5713_dumpaddr_charger); i++)
|
|
sm5713_write_reg(sm5713->charger, sm5713_dumpaddr_charger[i],
|
|
sm5713->reg_chg_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sm5713_dumpaddr_muic); i++)
|
|
sm5713_write_reg(sm5713->muic, sm5713_dumpaddr_muic[i],
|
|
sm5713->reg_muic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sm5713_dumpaddr_fuelgauge); i++)
|
|
sm5713_write_word(sm5713->fuelgauge, sm5713_dumpaddr_fuelgauge[i],
|
|
sm5713->reg_fg_dump[i]);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
const struct dev_pm_ops sm5713_pm = {
|
|
.suspend = sm5713_suspend,
|
|
.resume = sm5713_resume,
|
|
#ifdef CONFIG_HIBERNATION
|
|
.freeze = sm5713_freeze,
|
|
.thaw = sm5713_restore,
|
|
.restore = sm5713_restore,
|
|
#endif
|
|
};
|
|
|
|
static struct i2c_driver sm5713_i2c_driver = {
|
|
.driver = {
|
|
.name = MFD_DEV_NAME,
|
|
.owner = THIS_MODULE,
|
|
#if defined(CONFIG_PM)
|
|
.pm = &sm5713_pm,
|
|
#endif /* CONFIG_PM */
|
|
#if defined(CONFIG_OF)
|
|
.of_match_table = sm5713_i2c_dt_ids,
|
|
#endif /* CONFIG_OF */
|
|
},
|
|
.probe = sm5713_i2c_probe,
|
|
.remove = sm5713_i2c_remove,
|
|
.id_table = sm5713_i2c_id,
|
|
};
|
|
|
|
static int __init sm5713_i2c_init(void)
|
|
{
|
|
pr_info("%s:%s\n", MFD_DEV_NAME, __func__);
|
|
return i2c_add_driver(&sm5713_i2c_driver);
|
|
}
|
|
/* init early so consumer devices can complete system boot */
|
|
subsys_initcall(sm5713_i2c_init);
|
|
|
|
static void __exit sm5713_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&sm5713_i2c_driver);
|
|
}
|
|
module_exit(sm5713_i2c_exit);
|
|
|
|
MODULE_DESCRIPTION("SM5713 multi-function core driver");
|
|
MODULE_AUTHOR("Samsung Electronics");
|
|
MODULE_LICENSE("GPL");
|