600 lines
16 KiB
C
600 lines
16 KiB
C
/*
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* max77888.c - mfd core driver for the Maxim 77888
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*
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* Copyright (C) 2011 Samsung Electronics
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* SangYoung Son <hello.son@smasung.com>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* This driver is based on max8997.c
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*/
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/mutex.h>
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#include <linux/module.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/max77888.h>
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#include <linux/mfd/max77888-private.h>
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#include <linux/regulator/machine.h>
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#include <linux/delay.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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#endif
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#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
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#define I2C_ADDR_MUIC (0x4A >> 1)
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#define I2C_ADDR_HAPTIC (0x90 >> 1)
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#define I2C_ADDR_TEST (0xCE >> 1) /* TEST register */
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#ifdef CONFIG_MUIC_RESET_PIN_ENABLE
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int muic_reset_pin = 0;
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EXPORT_SYMBOL_GPL(muic_reset_pin);
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#endif
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static struct mfd_cell max77888_devs[] = {
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{ .name = "max77888-charger", },
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{ .name = "max77888-led", },
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{ .name = "max77888-muic", },
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{ .name = "max77888-safeout", },
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{ .name = "max77888-haptic", },
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};
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int max77888_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77888->iolock);
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ret = i2c_smbus_read_byte_data(i2c, reg);
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mutex_unlock(&max77888->iolock);
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if (ret < 0)
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return ret;
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ret &= 0xff;
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*dest = ret;
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return 0;
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}
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EXPORT_SYMBOL_GPL(max77888_read_reg);
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int max77888_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77888->iolock);
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ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
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mutex_unlock(&max77888->iolock);
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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(max77888_bulk_read);
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int max77888_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77888->iolock);
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ret = i2c_smbus_write_byte_data(i2c, reg, value);
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mutex_unlock(&max77888->iolock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(max77888_write_reg);
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int max77888_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77888->iolock);
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ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
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mutex_unlock(&max77888->iolock);
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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(max77888_bulk_write);
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static int max77888_read_word(struct i2c_client *i2c, u8 reg)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77888->iolock);
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ret = i2c_smbus_read_word_data(i2c, reg);
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mutex_unlock(&max77888->iolock);
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return ret;
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}
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int max77888_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77888->iolock);
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ret = i2c_smbus_read_byte_data(i2c, reg);
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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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ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
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}
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mutex_unlock(&max77888->iolock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(max77888_update_reg);
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static int of_max77888_dt(struct device *dev, struct max77888_platform_data *pdata)
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{
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struct device_node *np = dev->of_node;
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int retval = 0;
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#ifdef CONFIG_SS_VIBRATOR
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struct max77888_haptic_platform_data *haptic_data;
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haptic_data = kzalloc(sizeof(struct max77888_haptic_platform_data), GFP_KERNEL);
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if (haptic_data == NULL)
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return -ENOMEM;
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#endif
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if(!np) {
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#ifdef CONFIG_SS_VIBRATOR
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kfree(haptic_data);
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#endif
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return -EINVAL;
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}
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pdata->irq_gpio = of_get_named_gpio(np, "max77888,irq-gpio", 0);
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if (pdata->irq_gpio < 0) {
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pr_err("%s: failed get max77888 irq-gpio : %d\n",
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__func__, pdata->irq_gpio);
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pdata->irq_gpio = 0;
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}
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#ifdef CONFIG_MUIC_RESET_PIN_ENABLE
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pdata->irq_reset_gpio = of_get_named_gpio(np, "max77888,irq-reset-gpio", 0);
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if (pdata->irq_reset_gpio < 0) {
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pr_err("%s: failed get max77888 irq-reset-gpio : %d\n",
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__func__, pdata->irq_gpio);
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pdata->irq_reset_gpio = -1;
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muic_reset_pin = 0;
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}
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else
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muic_reset_pin = 1;
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#endif
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retval = of_property_read_u32(np, "max77888,irq-base", &pdata->irq_base);
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pdata->wakeup = of_property_read_bool(np, "max77888,wakeup");
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pr_info("%s: irq-gpio: %u \n", __func__, pdata->irq_gpio);
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#ifdef CONFIG_MUIC_RESET_PIN_ENABLE
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pr_info("%s: irq-reset-gpio: %u \n", __func__, pdata->irq_reset_gpio);
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#endif
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pr_info("%s: irq-gpio_flags: %u \n", __func__, pdata->irq_gpio_flags);
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pr_info("%s: irq-base: %u \n", __func__, pdata->irq_base);
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#ifdef CONFIG_SS_VIBRATOR
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of_property_read_u32(np, "haptic,max_timeout", &haptic_data->max_timeout);
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of_property_read_u32(np, "haptic,duty", &haptic_data->duty);
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of_property_read_u32(np, "haptic,period", &haptic_data->period);
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of_property_read_u32(np, "haptic,pwm_id", &haptic_data->pwm_id);
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pr_info("%s: timeout: %u \n", __func__, haptic_data->max_timeout);
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pr_info("%s: duty: %u \n", __func__, haptic_data->duty);
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pr_info("%s: period: %u \n", __func__, haptic_data->period);
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pr_info("%s: pwm_id: %u \n", __func__, haptic_data->pwm_id);
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pdata->haptic_data = haptic_data;
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#endif
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return 0;
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}
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static int max77888_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct max77888_dev *max77888;
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struct max77888_platform_data *pdata;
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u8 reg_data;
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u16 reg_data16;
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u8 str_data[10] = {0,};
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int i;
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int ret = 0;
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msleep(500);
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max77888 = kzalloc(sizeof(struct max77888_dev), GFP_KERNEL);
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if (max77888 == NULL)
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return -ENOMEM;
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if (i2c->dev.of_node) {
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pdata = devm_kzalloc(&i2c->dev,
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sizeof(struct max77888_platform_data),
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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_max77888_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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return ret;
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}
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/*Filling the platform data*/
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pdata->muic = &max77888_muic;
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#if defined(CONFIG_REGULATOR_MAX77888)
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pdata->num_regulators = MAX77888_REG_MAX;
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pdata->regulators = max77888_regulators,
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#endif
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#ifdef CONFIG_LEDS_MAX77888
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pdata->led_data = &max77888_led_pdata;
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#endif
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/*pdata update to other modules*/
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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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i2c_set_clientdata(i2c, max77888);
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max77888->dev = &i2c->dev;
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max77888->i2c = i2c;
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max77888->irq = i2c->irq;
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if (pdata) {
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max77888->irq_base = pdata->irq_base;
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max77888->irq_gpio = pdata->irq_gpio;
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#ifdef CONFIG_MUIC_RESET_PIN_ENABLE
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if (muic_reset_pin)
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{
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max77888->irq_reset_gpio = pdata->irq_reset_gpio;
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gpio_tlmm_config(GPIO_CFG(max77888->irq_reset_gpio, 0, GPIO_CFG_INPUT,
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GPIO_CFG_NO_PULL, GPIO_CFG_2MA), GPIO_CFG_DISABLE);
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}
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#endif
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max77888->wakeup = pdata->wakeup;
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gpio_tlmm_config(GPIO_CFG(max77888->irq_gpio, 0, GPIO_CFG_INPUT,
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GPIO_CFG_NO_PULL, GPIO_CFG_2MA), GPIO_CFG_DISABLE);
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} else {
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goto err;
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}
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mutex_init(&max77888->iolock);
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if (max77888_read_reg(i2c, MAX77888_PMIC_REG_PMIC_ID2, ®_data) < 0) {
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dev_err(max77888->dev,
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"device not found on this channel (this is not an error)\n");
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ret = -ENODEV;
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goto err;
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} else {
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/* print rev */
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max77888->pmic_rev = (reg_data & 0x7);
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max77888->pmic_ver = ((reg_data & 0xF8) >> 0x3);
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pr_info("%s: device found: rev.0x%x, ver.0x%x\n", __func__,
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max77888->pmic_rev, max77888->pmic_ver);
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}
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/* No active discharge on safeout ldo 1,2 */
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max77888_update_reg(i2c, MAX77888_CHG_REG_SAFEOUT_CTRL, 0x00, 0x30);
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pr_info("%s: i2c->name=%s irq=%d !!!\n",__func__, i2c->name, i2c->irq);
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max77888->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
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i2c_set_clientdata(max77888->muic, max77888);
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max77888->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
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i2c_set_clientdata(max77888->haptic, max77888);
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// Set TEST Reigster Slave address
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max77888->test = i2c_new_dummy(i2c->adapter, I2C_ADDR_TEST);
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i2c_set_clientdata(max77888->test, max77888);
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// Start Over-write wrong-Trimmed bit //
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// 1. Test Register Access Enabled
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max77888_write_reg(max77888->i2c, 0xFE, 0xC5);
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// 2. Enable TST_KEY
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max77888_write_reg(max77888->test, 0xB3, 0x0C);
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// 3. Read 0x2E with word unit.
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reg_data16 = max77888_read_word(max77888->test, 0x2E);
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// 4. Check Bit5 of First bit(Bit13)
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if ((reg_data16 & 0x2000) == 0) {
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// Wrong Trimmed
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// 5. Read and Store
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// 5-1. Read and Store from 0x21 to 0x2A
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for (i = 0x21; i <= 0x2A; i++) {
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if (i == 0x25) {
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continue;
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}
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reg_data16 = max77888_read_word(max77888->test, i);
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str_data[i-0x21] = (reg_data16 >> 8);
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}
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// 5-2. Read and Store 0x2E
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reg_data16 = max77888_read_word(max77888->test, i);
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reg_data = (reg_data16 >> 8);
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// 6. Write Stored data from 0x21 to 0x2A.
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for (i = 0x21; i <= 0x2A; i++) {
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if ( i == 0x25) {
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continue;
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}
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max77888_write_reg(max77888->test, i, str_data[i-0x21]);
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}
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// 7. Write 0x2E
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max77888_write_reg(max77888->test, 0x2E, (reg_data | 0x20));
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// 8. Write 0x20 to 0x40.
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max77888_write_reg(max77888->test, 0x20, 0x40);
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}
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// 9. Disable TST_KEY, Write 0xB3 to 0x00
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max77888_write_reg(max77888->test, 0xB3, 0x00);
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// 10. Test Register Access Disabled, Write 0xFE to 0x00
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max77888_write_reg(max77888->i2c, 0xFE, 0x00);
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ret = max77888_irq_init(max77888);
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if (ret < 0)
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goto err_irq_init;
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ret = mfd_add_devices(max77888->dev, -1, max77888_devs,
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ARRAY_SIZE(max77888_devs), NULL, 0);
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if (ret < 0)
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goto err_mfd;
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device_init_wakeup(max77888->dev, pdata->wakeup);
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pr_info("%s:%d:", __func__, __LINE__ );
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return ret;
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err_mfd:
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mfd_remove_devices(max77888->dev);
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max77888_irq_exit(max77888);
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err_irq_init:
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i2c_unregister_device(max77888->muic);
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i2c_unregister_device(max77888->haptic);
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err:
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pr_info("%s:%d:", __func__, __LINE__ );
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kfree(max77888);
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return ret;
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}
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static int max77888_i2c_remove(struct i2c_client *i2c)
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{
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struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
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mfd_remove_devices(max77888->dev);
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i2c_unregister_device(max77888->muic);
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i2c_unregister_device(max77888->haptic);
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kfree(max77888);
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return 0;
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}
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static const struct i2c_device_id max77888_i2c_id[] = {
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{ "max77888", TYPE_MAX77888 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max77888_i2c_id);
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static struct of_device_id max77888_i2c_match_table[] = {
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{ .compatible = "max77888,i2c", },
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{ },
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};
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MODULE_DEVICE_TABLE(of, max77888_i2c_match_table);
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#ifdef CONFIG_PM
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static int max77888_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 max77888_dev *max77888 = i2c_get_clientdata(i2c);
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if (device_may_wakeup(dev))
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enable_irq_wake(max77888->irq);
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return 0;
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}
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static int max77888_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 max77888_dev *max77888 = i2c_get_clientdata(i2c);
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if (device_may_wakeup(dev))
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disable_irq_wake(max77888->irq);
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return max77888_irq_resume(max77888);
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}
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#else
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#define max77888_suspend NULL
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#define max77888_resume NULL
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#endif /* CONFIG_PM */
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#ifdef CONFIG_HIBERNATION
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u8 max77888_dumpaddr_pmic[] = {
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#ifdef CONFIG_MFD_MAX77888
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MAX77888_LED_REG_IFLASH,
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#else
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MAX77888_LED_REG_IFLASH1,
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MAX77888_LED_REG_IFLASH2,
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#endif
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MAX77888_LED_REG_ITORCH,
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MAX77888_LED_REG_ITORCHTORCHTIMER,
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MAX77888_LED_REG_FLASH_TIMER,
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MAX77888_LED_REG_FLASH_EN,
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MAX77888_LED_REG_MAX_FLASH1,
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MAX77888_LED_REG_MAX_FLASH2,
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MAX77888_LED_REG_VOUT_CNTL,
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#ifdef CONFIG_MFD_MAX77888
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MAX77888_LED_REG_VOUT_FLASH,
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#else
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MAX77888_LED_REG_VOUT_FLASH1,
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#endif
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MAX77888_LED_REG_FLASH_INT_STATUS,
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MAX77888_PMIC_REG_TOPSYS_INT_MASK,
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MAX77888_PMIC_REG_MAINCTRL1,
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MAX77888_PMIC_REG_LSCNFG,
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MAX77888_CHG_REG_CHG_INT_MASK,
|
|
MAX77888_CHG_REG_CHG_CNFG_00,
|
|
MAX77888_CHG_REG_CHG_CNFG_01,
|
|
MAX77888_CHG_REG_CHG_CNFG_02,
|
|
MAX77888_CHG_REG_CHG_CNFG_03,
|
|
MAX77888_CHG_REG_CHG_CNFG_04,
|
|
MAX77888_CHG_REG_CHG_CNFG_05,
|
|
MAX77888_CHG_REG_CHG_CNFG_06,
|
|
MAX77888_CHG_REG_CHG_CNFG_07,
|
|
MAX77888_CHG_REG_CHG_CNFG_08,
|
|
MAX77888_CHG_REG_CHG_CNFG_09,
|
|
MAX77888_CHG_REG_CHG_CNFG_10,
|
|
MAX77888_CHG_REG_CHG_CNFG_11,
|
|
MAX77888_CHG_REG_CHG_CNFG_12,
|
|
MAX77888_CHG_REG_CHG_CNFG_13,
|
|
MAX77888_CHG_REG_CHG_CNFG_14,
|
|
MAX77888_CHG_REG_SAFEOUT_CTRL,
|
|
};
|
|
|
|
u8 max77888_dumpaddr_muic[] = {
|
|
MAX77888_MUIC_REG_INTMASK1,
|
|
MAX77888_MUIC_REG_INTMASK2,
|
|
MAX77888_MUIC_REG_INTMASK3,
|
|
MAX77888_MUIC_REG_CDETCTRL1,
|
|
MAX77888_MUIC_REG_CDETCTRL2,
|
|
MAX77888_MUIC_REG_CTRL1,
|
|
MAX77888_MUIC_REG_CTRL2,
|
|
MAX77888_MUIC_REG_CTRL3,
|
|
};
|
|
|
|
|
|
u8 max77888_dumpaddr_haptic[] = {
|
|
MAX77888_HAPTIC_REG_CONFIG1,
|
|
MAX77888_HAPTIC_REG_CONFIG2,
|
|
MAX77888_HAPTIC_REG_CONFIG_CHNL,
|
|
MAX77888_HAPTIC_REG_CONFG_CYC1,
|
|
MAX77888_HAPTIC_REG_CONFG_CYC2,
|
|
MAX77888_HAPTIC_REG_CONFIG_PER1,
|
|
MAX77888_HAPTIC_REG_CONFIG_PER2,
|
|
MAX77888_HAPTIC_REG_CONFIG_PER3,
|
|
MAX77888_HAPTIC_REG_CONFIG_PER4,
|
|
MAX77888_HAPTIC_REG_CONFIG_DUTY1,
|
|
MAX77888_HAPTIC_REG_CONFIG_DUTY2,
|
|
MAX77888_HAPTIC_REG_CONFIG_PWM1,
|
|
MAX77888_HAPTIC_REG_CONFIG_PWM2,
|
|
MAX77888_HAPTIC_REG_CONFIG_PWM3,
|
|
MAX77888_HAPTIC_REG_CONFIG_PWM4,
|
|
};
|
|
|
|
|
|
static int max77888_freeze(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77888_dumpaddr_pmic); i++)
|
|
max77888_read_reg(i2c, max77888_dumpaddr_pmic[i],
|
|
&max77888->reg_pmic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77888_dumpaddr_muic); i++)
|
|
max77888_read_reg(i2c, max77888_dumpaddr_muic[i],
|
|
&max77888->reg_muic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77888_dumpaddr_haptic); i++)
|
|
max77888_read_reg(i2c, max77888_dumpaddr_haptic[i],
|
|
&max77888->reg_haptic_dump[i]);
|
|
|
|
disable_irq(max77888->irq);
|
|
#ifdef CONFIG_MUIC_RESET_PIN_ENABLE
|
|
if (muic_reset_pin)
|
|
disable_irq(max77888->irq_reset);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int max77888_restore(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
struct max77888_dev *max77888 = i2c_get_clientdata(i2c);
|
|
int i;
|
|
|
|
enable_irq(max77888->irq);
|
|
#ifdef CONFIG_MUIC_RESET_PIN_ENABLE
|
|
if (muic_reset_pin)
|
|
enable_irq(max77888->irq_reset);
|
|
#endif
|
|
for (i = 0; i < ARRAY_SIZE(max77888_dumpaddr_pmic); i++)
|
|
max77888_write_reg(i2c, max77888_dumpaddr_pmic[i],
|
|
max77888->reg_pmic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77888_dumpaddr_muic); i++)
|
|
max77888_write_reg(i2c, max77888_dumpaddr_muic[i],
|
|
max77888->reg_muic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77888_dumpaddr_haptic); i++)
|
|
max77888_write_reg(i2c, max77888_dumpaddr_haptic[i],
|
|
max77888->reg_haptic_dump[i]);
|
|
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
|
|
const struct dev_pm_ops max77888_pm = {
|
|
.suspend = max77888_suspend,
|
|
.resume = max77888_resume,
|
|
#ifdef CONFIG_HIBERNATION
|
|
.freeze = max77888_freeze,
|
|
.thaw = max77888_restore,
|
|
.restore = max77888_restore,
|
|
#endif
|
|
};
|
|
|
|
static struct i2c_driver max77888_i2c_driver = {
|
|
.driver = {
|
|
.name = "max77888",
|
|
.owner = THIS_MODULE,
|
|
.pm = &max77888_pm,
|
|
.of_match_table = max77888_i2c_match_table,
|
|
},
|
|
.probe = max77888_i2c_probe,
|
|
.remove = max77888_i2c_remove,
|
|
.id_table = max77888_i2c_id,
|
|
};
|
|
|
|
static int __init max77888_i2c_init(void)
|
|
{
|
|
pr_info("%s: START\n", __func__);
|
|
return i2c_add_driver(&max77888_i2c_driver);
|
|
}
|
|
/* init early so consumer devices can complete system boot */
|
|
//subsys_initcall(max77888_i2c_init);
|
|
module_init(max77888_i2c_init);
|
|
|
|
static void __exit max77888_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&max77888_i2c_driver);
|
|
}
|
|
module_exit(max77888_i2c_exit);
|
|
|
|
MODULE_DESCRIPTION("MAXIM 77888 multi-function core driver");
|
|
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
|
|
MODULE_LICENSE("GPL");
|