595 lines
15 KiB
C
595 lines
15 KiB
C
/*
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* max77843.c - mfd core driver for the Maxim 77843
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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/module.h>
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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/mfd/core.h>
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#include <linux/mfd/max77843.h>
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#include <linux/mfd/max77843-private.h>
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#include <linux/regulator/machine.h>
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//#include <mach/sec_debug.h>
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#include <linux/mfd/pm8xxx/misc.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) /* Top sys, Haptic */
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#define I2C_ADDR_MUIC (0x4A >> 1)
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#define I2C_ADDR_LED (0x94 >> 1)
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#define I2C_ADDR_CHG (0xD2 >> 1)
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#define I2C_ADDR_FG (0x6C >> 1)
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static struct mfd_cell max77843_devs[] = {
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{ .name = "max77843-fuelgauge", },
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{ .name = "max77843-charger", },
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{ .name = "max77843-muic", },
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{ .name = "max77843-haptic", },
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#if defined(CONFIG_LEDS_MAX77843_RGB)
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{ .name = "leds-max77843-rgb", },
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#endif
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#ifdef CONFIG_LEDS_MAX77843
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{ .name = "max77843-led", },
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#endif
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};
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#if defined(CONFIG_EXTCON)
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struct max77843_muic_data max77843_muic = {
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.usb_sel = 0,
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.uart_sel = 0,
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};
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#endif
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int max77843_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->iolock);
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ret = i2c_smbus_read_byte_data(i2c, reg);
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mutex_unlock(&max77843->iolock);
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if (ret < 0) {
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dev_err(max77843->dev,
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"%s, reg(0x%x), ret(%d)\n", __func__, reg, ret);
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return ret;
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}
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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(max77843_read_reg);
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int max77843_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->iolock);
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ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
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mutex_unlock(&max77843->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(max77843_bulk_read);
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int max77843_read_word(struct i2c_client *i2c, u8 reg)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->iolock);
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ret = i2c_smbus_read_word_data(i2c, reg);
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mutex_unlock(&max77843->iolock);
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if (ret < 0)
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return ret;
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return ret;
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}
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EXPORT_SYMBOL_GPL(max77843_read_word);
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int max77843_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->iolock);
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ret = i2c_smbus_write_byte_data(i2c, reg, value);
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if (ret < 0)
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dev_err(max77843->dev,
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"%s, reg(0x%x), ret(%d)\n", __func__, reg, ret);
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mutex_unlock(&max77843->iolock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(max77843_write_reg);
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int max77843_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->iolock);
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ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
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mutex_unlock(&max77843->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(max77843_bulk_write);
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int max77843_write_word(struct i2c_client *i2c, u8 reg, u16 value)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->iolock);
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ret = i2c_smbus_write_word_data(i2c, reg, value);
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mutex_unlock(&max77843->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(max77843_write_word);
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int max77843_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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int ret;
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mutex_lock(&max77843->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(&max77843->iolock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(max77843_update_reg);
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static int max77843_i2c_pinctrl_init(struct max77843_dev *max77843)
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{
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int retval;
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/* Get pinctrl if target uses pinctrl */
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max77843->max_pinctrl = devm_pinctrl_get(max77843->dev);
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if (IS_ERR_OR_NULL(max77843->max_pinctrl)) {
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dev_dbg(max77843->dev,
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"Target does not use pinctrl\n");
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retval = PTR_ERR(max77843->max_pinctrl);
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max77843->max_pinctrl = NULL;
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return retval;
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}
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max77843->gpio_state_active
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= pinctrl_lookup_state(max77843->max_pinctrl, "max77843_interrupt_pins_active");
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if (IS_ERR_OR_NULL(max77843->gpio_state_active)) {
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dev_dbg(max77843->dev,
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"Can not get ts default pinstate\n");
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retval = PTR_ERR(max77843->gpio_state_active);
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max77843->max_pinctrl = NULL;
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return retval;
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}
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max77843->gpio_state_suspend
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= pinctrl_lookup_state(max77843->max_pinctrl, "max77843_interrupt_pins_suspend");
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if (IS_ERR_OR_NULL(max77843->gpio_state_suspend)) {
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dev_dbg(max77843->dev,
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"Can not get ts sleep pinstate\n");
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retval = PTR_ERR(max77843->gpio_state_suspend);
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max77843->max_pinctrl = NULL;
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return retval;
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}
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return 0;
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}
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static int max77843_i2c_pinctrl_select(struct max77843_dev *max77843, bool on)
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{
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struct pinctrl_state *pins_state;
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int ret;
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pins_state = on ? max77843->gpio_state_active
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: max77843->gpio_state_suspend;
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if (!IS_ERR_OR_NULL(pins_state)) {
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ret = pinctrl_select_state(max77843->max_pinctrl, pins_state);
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if (ret) {
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dev_err(max77843->dev,
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"can not set %s pins\n",
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on ? "max77843_interrupt_pins_active" : "max77843_interrupt_pins_suspend");
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return ret;
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}
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} else
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dev_err(max77843->dev,
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"not a valid '%s' pinstate\n",
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on ? "max77843_interrupt_pins_active" : "max77843_interrupt_pins_suspend");
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return 0;
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}
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static int of_max77843_dt(struct device *dev, struct max77843_platform_data *pdata)
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{
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struct device_node *np = dev->of_node;
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#ifdef CONFIG_SS_VIBRATOR
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struct max77843_haptic_platform_data *haptic_data;
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#endif
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if(!np)
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return -EINVAL;
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#ifdef CONFIG_SS_VIBRATOR
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haptic_data = kzalloc(sizeof(struct max77843_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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pdata->irq_gpio = of_get_named_gpio_flags(np, "max77843,irq-gpio",
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0, &pdata->irq_gpio_flags);
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pdata->wakeup = of_property_read_bool(np, "max77843,wakeup");
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pr_info("%s: irq-gpio: %u \n", __func__, pdata->irq_gpio);
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#ifdef CONFIG_SS_VIBRATOR
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if (!of_property_read_u32(np, "haptic,mode", &haptic_data->mode))
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haptic_data->mode = 1;
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if (!of_property_read_u32(np, "haptic,divisor", &haptic_data->divisor))
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haptic_data->divisor = 128;
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pr_info("%s: mode: %d \n", __func__, haptic_data->mode);
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pr_info("%s: divisor: %d \n", __func__, haptic_data->divisor);
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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 max77843_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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int retval = 0;
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struct max77843_dev *max77843;
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struct max77843_platform_data *pdata;
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u8 reg_data;
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int ret = 0;
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dev_info(&i2c->dev, "%s\n", __func__);
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max77843 = kzalloc(sizeof(struct max77843_dev), GFP_KERNEL);
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if (max77843 == 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 max77843_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_max77843_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_data = &max77843_muic;
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#ifdef CONFIG_REGULATOR_MAX77843
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pdata->num_regulators = MAX77843_REG_MAX;
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pdata->regulators = max77843_regulators;
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#endif
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#ifdef CONFIG_LEDS_MAX77843
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pdata->led_data = &max77843_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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i2c_set_clientdata(i2c, max77843);
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max77843->dev = &i2c->dev;
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max77843->i2c = i2c;
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max77843->irq = i2c->irq;
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if (pdata) {
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max77843->pdata = pdata;
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max77843->irq_base = irq_alloc_descs(-1, 0, MAX77843_IRQ_NR, -1);
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if (max77843->irq_base < 0) {
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pr_err("%s: irq_alloc_descs Fail ret(%d)\n",
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__func__, max77843->irq_base);
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ret = -EINVAL;
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} else {
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pdata->irq_base = max77843->irq_base;
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}
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max77843->irq_gpio = pdata->irq_gpio;
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max77843->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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retval = max77843_i2c_pinctrl_init(max77843);
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if (!retval && max77843->max_pinctrl) {
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retval = max77843_i2c_pinctrl_select(max77843, true);
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if (retval < 0)
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goto err;
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}
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mutex_init(&max77843->iolock);
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max77843->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
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i2c_set_clientdata(max77843->muic, max77843);
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max77843->charger = i2c_new_dummy(i2c->adapter, I2C_ADDR_CHG);
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i2c_set_clientdata(max77843->charger, max77843);
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max77843->fuelgauge = i2c_new_dummy(i2c->adapter, I2C_ADDR_FG);
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i2c_set_clientdata(max77843->fuelgauge, max77843);
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max77843->led = i2c_new_dummy(i2c->adapter, I2C_ADDR_LED);
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i2c_set_clientdata(max77843->led, max77843);
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if (max77843_read_reg(max77843->i2c, MAX77843_PMIC_REG_PMICID, ®_data) < 0) {
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dev_err(max77843->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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} else {
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/* print rev */
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max77843->pmic_rev = (reg_data & 0x7);
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max77843->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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max77843->pmic_rev, max77843->pmic_ver);
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}
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ret = max77843_irq_init(max77843);
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if (ret < 0)
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goto err_irq_init;
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ret = mfd_add_devices(max77843->dev, -1, max77843_devs,
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ARRAY_SIZE(max77843_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(max77843->dev, pdata->wakeup);
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return ret;
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err_mfd:
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mfd_remove_devices(max77843->dev);
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max77843_irq_exit(max77843);
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err_irq_init:
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i2c_unregister_device(max77843->muic);
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i2c_unregister_device(max77843->led);
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err:
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kfree(max77843);
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return ret;
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}
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static int max77843_i2c_remove(struct i2c_client *i2c)
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{
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struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
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mfd_remove_devices(max77843->dev);
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i2c_unregister_device(max77843->muic);
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i2c_unregister_device(max77843->led);
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kfree(max77843);
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return 0;
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}
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static const struct i2c_device_id max77843_i2c_id[] = {
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{ "max77843", TYPE_MAX77843 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max77843_i2c_id);
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static struct of_device_id max77843_i2c_match_table[] = {
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{ .compatible = "maxim,max77843", },
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{ },
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};
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MODULE_DEVICE_TABLE(of, max77843_i2c_match_table);
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#ifdef CONFIG_PM
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static int max77843_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 max77843_dev *max77843 = i2c_get_clientdata(i2c);
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if (device_may_wakeup(dev))
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enable_irq_wake(max77843->irq);
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return 0;
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}
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static int max77843_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 max77843_dev *max77843 = i2c_get_clientdata(i2c);
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if (device_may_wakeup(dev))
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disable_irq_wake(max77843->irq);
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return max77843_irq_resume(max77843);
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}
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#else
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#define max77843_suspend NULL
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#define max77843_resume NULL
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#endif /* CONFIG_PM */
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#ifdef CONFIG_HIBERNATION
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#if 0
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u8 max77843_dumpaddr_pmic[] = {
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MAX77843_LED_REG_IFLASH1,
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MAX77843_LED_REG_IFLASH2,
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MAX77843_LED_REG_ITORCH,
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MAX77843_LED_REG_ITORCHTORCHTIMER,
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MAX77843_LED_REG_FLASH_TIMER,
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MAX77843_LED_REG_FLASH_EN,
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MAX77843_LED_REG_MAX_FLASH1,
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MAX77843_LED_REG_MAX_FLASH2,
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MAX77843_LED_REG_VOUT_CNTL,
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MAX77843_LED_REG_VOUT_FLASH1,
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MAX77843_LED_REG_FLASH_INT_STATUS,
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MAX77843_PMIC_REG_TOPSYS_INT_MASK,
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MAX77843_PMIC_REG_MAINCTRL1,
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MAX77843_PMIC_REG_LSCNFG,
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};
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#endif
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u8 max77843_dumpaddr_muic[] = {
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MAX77843_MUIC_REG_INTMASK1,
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MAX77843_MUIC_REG_INTMASK2,
|
|
MAX77843_MUIC_REG_INTMASK3,
|
|
MAX77843_MUIC_REG_CDETCTRL1,
|
|
MAX77843_MUIC_REG_CDETCTRL2,
|
|
MAX77843_MUIC_REG_CTRL1,
|
|
MAX77843_MUIC_REG_CTRL2,
|
|
MAX77843_MUIC_REG_CTRL3,
|
|
MAX77843_MUIC_REG_CTRL4,
|
|
};
|
|
|
|
#if 0
|
|
u8 max77843_dumpaddr_haptic[] = {
|
|
MAX77843_HAPTIC_REG_CONFIG1,
|
|
MAX77843_HAPTIC_REG_CONFIG2,
|
|
MAX77843_HAPTIC_REG_CONFIG_CHNL,
|
|
MAX77843_HAPTIC_REG_CONFG_CYC1,
|
|
MAX77843_HAPTIC_REG_CONFG_CYC2,
|
|
MAX77843_HAPTIC_REG_CONFIG_PER1,
|
|
MAX77843_HAPTIC_REG_CONFIG_PER2,
|
|
MAX77843_HAPTIC_REG_CONFIG_PER3,
|
|
MAX77843_HAPTIC_REG_CONFIG_PER4,
|
|
MAX77843_HAPTIC_REG_CONFIG_DUTY1,
|
|
MAX77843_HAPTIC_REG_CONFIG_DUTY2,
|
|
MAX77843_HAPTIC_REG_CONFIG_PWM1,
|
|
MAX77843_HAPTIC_REG_CONFIG_PWM2,
|
|
MAX77843_HAPTIC_REG_CONFIG_PWM3,
|
|
MAX77843_HAPTIC_REG_CONFIG_PWM4,
|
|
};
|
|
#endif
|
|
|
|
u8 max77843_dumpaddr_led[] = {
|
|
MAX77843_RGBLED_REG_LEDEN,
|
|
MAX77843_RGBLED_REG_LED0BRT,
|
|
MAX77843_RGBLED_REG_LED1BRT,
|
|
MAX77843_RGBLED_REG_LED2BRT,
|
|
MAX77843_RGBLED_REG_LED3BRT,
|
|
MAX77843_RGBLED_REG_LEDBLNK,
|
|
MAX77843_RGBLED_REG_LEDRMP,
|
|
};
|
|
|
|
static int max77843_freeze(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77843_dumpaddr_pmic); i++)
|
|
max77843_read_reg(i2c, max77843_dumpaddr_pmic[i],
|
|
&max77843->reg_pmic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77843_dumpaddr_muic); i++)
|
|
max77843_read_reg(i2c, max77843_dumpaddr_muic[i],
|
|
&max77843->reg_muic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77843_dumpaddr_led); i++)
|
|
max77843_read_reg(i2c, max77843_dumpaddr_led[i],
|
|
&max77843->reg_led_dump[i]);
|
|
|
|
disable_irq(max77843->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max77843_restore(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
struct max77843_dev *max77843 = i2c_get_clientdata(i2c);
|
|
int i;
|
|
|
|
enable_irq(max77843->irq);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77843_dumpaddr_pmic); i++)
|
|
max77843_write_reg(i2c, max77843_dumpaddr_pmic[i],
|
|
max77843->reg_pmic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77843_dumpaddr_muic); i++)
|
|
max77843_write_reg(i2c, max77843_dumpaddr_muic[i],
|
|
max77843->reg_muic_dump[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(max77843_dumpaddr_led); i++)
|
|
max77843_write_reg(i2c, max77843_dumpaddr_led[i],
|
|
max77843->reg_led_dump[i]);
|
|
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
|
|
const struct dev_pm_ops max77843_pm = {
|
|
.suspend = max77843_suspend,
|
|
.resume = max77843_resume,
|
|
#ifdef CONFIG_HIBERNATION
|
|
.freeze = max77843_freeze,
|
|
.thaw = max77843_restore,
|
|
.restore = max77843_restore,
|
|
#endif
|
|
};
|
|
|
|
static struct i2c_driver max77843_i2c_driver = {
|
|
.driver = {
|
|
.name = "max77843",
|
|
.owner = THIS_MODULE,
|
|
.pm = &max77843_pm,
|
|
.of_match_table = max77843_i2c_match_table,
|
|
},
|
|
.probe = max77843_i2c_probe,
|
|
.remove = max77843_i2c_remove,
|
|
.id_table = max77843_i2c_id,
|
|
};
|
|
|
|
//module_i2c_driver(max77843_i2c_driver);
|
|
|
|
static int __init max77843_i2c_init(void)
|
|
{
|
|
printk("%s \n",__func__);
|
|
return i2c_add_driver(&max77843_i2c_driver);
|
|
}
|
|
/* init early so consumer devices can complete system boot */
|
|
subsys_initcall(max77843_i2c_init);
|
|
|
|
static void __exit max77843_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&max77843_i2c_driver);
|
|
}
|
|
module_exit(max77843_i2c_exit);
|
|
|
|
MODULE_DESCRIPTION("MAXIM 77843 multi-function core driver");
|
|
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
|
|
MODULE_LICENSE("GPL");
|