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android_kernel_samsung_rube…/drivers/mfd/max77803.c
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/*
* max77803.c - mfd core driver for the Maxim 77803
*
* Copyright (C) 2011 Samsung Electronics
* SangYoung Son <hello.son@smasung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* This driver is based on max8997.c
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max77803.h>
#include <linux/mfd/max77803-private.h>
#include <linux/regulator/machine.h>
//#include <mach/sec_debug.h>
#include <linux/mfd/pm8xxx/misc.h>
#if defined (CONFIG_OF)
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#endif
#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
#define I2C_ADDR_MUIC (0x4A >> 1)
#define I2C_ADDR_HAPTIC (0x90 >> 1)
static struct mfd_cell max77803_devs[] = {
{ .name = "max77803-charger", },
{ .name = "max77803-led", },
{ .name = "max77803-muic", },
{ .name = "max77803-safeout", },
{ .name = "max77803-haptic", },
};
int max77803_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
{
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max77803->iolock);
ret = i2c_smbus_read_byte_data(i2c, reg);
mutex_unlock(&max77803->iolock);
if (ret < 0) {
dev_err(max77803->dev,
"%s, reg(0x%x), ret(%d)\n", __func__, reg, ret);
return ret;
}
ret &= 0xff;
*dest = ret;
return 0;
}
EXPORT_SYMBOL_GPL(max77803_read_reg);
int max77803_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max77803->iolock);
ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
mutex_unlock(&max77803->iolock);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(max77803_bulk_read);
int max77803_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
{
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max77803->iolock);
ret = i2c_smbus_write_byte_data(i2c, reg, value);
if (ret < 0)
dev_err(max77803->dev,
"%s, reg(0x%x), ret(%d)\n", __func__, reg, ret);
mutex_unlock(&max77803->iolock);
return ret;
}
EXPORT_SYMBOL_GPL(max77803_write_reg);
int max77803_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max77803->iolock);
ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
mutex_unlock(&max77803->iolock);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(max77803_bulk_write);
int max77803_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
{
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max77803->iolock);
ret = i2c_smbus_read_byte_data(i2c, reg);
if (ret >= 0) {
u8 old_val = ret & 0xff;
u8 new_val = (val & mask) | (old_val & (~mask));
ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
}
mutex_unlock(&max77803->iolock);
return ret;
}
EXPORT_SYMBOL_GPL(max77803_update_reg);
static int of_max77803_dt(struct device *dev, struct max77803_platform_data *pdata)
{
struct device_node *np = dev->of_node;
#ifdef CONFIG_VIBETONZ
struct max77803_haptic_platform_data *haptic_data;
#endif
int retval = 0;
#ifdef CONFIG_VIBETONZ
haptic_data = kzalloc(sizeof(struct max77803_haptic_platform_data), GFP_KERNEL);
if (haptic_data == NULL)
return -ENOMEM;
#endif
if(!np)
return -EINVAL;
pdata->irq_gpio = of_get_named_gpio_flags(np, "max77803,irq-gpio",
0, &pdata->irq_gpio_flags);
of_property_read_u32(np, "max77803,irq-base", &pdata->irq_base);
pdata->wakeup = of_property_read_bool(np, "max77803,wakeup");
retval = of_get_named_gpio(np, "max77803,wc-irq-gpio", 0);
if (retval < 0)
pdata->wc_irq_gpio = 0;
else
pdata->wc_irq_gpio = retval;
pr_info("%s: irq-gpio: %u \n", __func__, pdata->irq_gpio);
pr_info("%s: irq-base: %u \n", __func__, pdata->irq_base);
pr_info("%s: wc-irq-gpio: %u \n", __func__, pdata->wc_irq_gpio);
#ifdef CONFIG_VIBETONZ
of_property_read_u32(np, "haptic,max_timeout", &haptic_data->max_timeout);
of_property_read_u32(np, "haptic,duty", &haptic_data->duty);
of_property_read_u32(np, "haptic,period", &haptic_data->period);
of_property_read_u32(np, "haptic,pwm_id", &haptic_data->pwm_id);
pr_info("%s: timeout: %u \n", __func__, haptic_data->max_timeout);
pr_info("%s: duty: %u \n", __func__, haptic_data->duty);
pr_info("%s: period: %u \n", __func__, haptic_data->period);
pr_info("%s: pwm_id: %u \n", __func__, haptic_data->pwm_id);
pdata->haptic_data = haptic_data;
#endif
return 0;
}
static int max77803_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct max77803_dev *max77803;
struct max77803_platform_data *pdata;
u8 reg_data;
int ret = 0;
dev_info(&i2c->dev, "%s\n", __func__);
max77803 = kzalloc(sizeof(struct max77803_dev), GFP_KERNEL);
if (max77803 == NULL)
return -ENOMEM;
if (i2c->dev.of_node) {
pdata = devm_kzalloc(&i2c->dev,
sizeof(struct max77803_platform_data),
GFP_KERNEL);
if (!pdata) {
dev_err(&i2c->dev, "Failed to allocate memory \n");
ret = -ENOMEM;
goto err;
}
ret = of_max77803_dt(&i2c->dev, pdata);
if (ret < 0){
dev_err(&i2c->dev, "Failed to get device of_node \n");
return ret;
}
/*Filling the platform data*/
pdata->muic_data = &max77803_muic;
#ifdef CONFIG_REGULATOR_MAX77803
pdata->num_regulators = MAX77803_REG_MAX;
pdata->regulators = max77803_regulators;
#endif
#ifdef CONFIG_LEDS_MAX77803
pdata->led_data = &max77803_led_pdata;
#endif
/*pdata update to other modules*/
i2c->dev.platform_data = pdata;
} else
pdata = i2c->dev.platform_data;
i2c_set_clientdata(i2c, max77803);
max77803->dev = &i2c->dev;
max77803->i2c = i2c;
max77803->irq = i2c->irq;
// max77803->type = id->driver_data;
if (pdata) {
max77803->irq_base = pdata->irq_base;
max77803->irq_gpio = pdata->irq_gpio;
max77803->wakeup = pdata->wakeup;
gpio_tlmm_config(GPIO_CFG(max77803->irq_gpio, 0, GPIO_CFG_INPUT,
GPIO_CFG_NO_PULL, GPIO_CFG_2MA), GPIO_CFG_DISABLE);
} else {
ret = -EINVAL;
goto err;
}
mutex_init(&max77803->iolock);
if (max77803_read_reg(i2c, MAX77803_PMIC_REG_PMIC_ID2, &reg_data) < 0) {
dev_err(max77803->dev,
"device not found on this channel (this is not an error)\n");
ret = -ENODEV;
goto err;
} else {
/* print rev */
max77803->pmic_rev = (reg_data & 0x7);
max77803->pmic_ver = ((reg_data & 0xF8) >> 0x3);
pr_info("%s: device found: rev.0x%x, ver.0x%x\n", __func__,
max77803->pmic_rev, max77803->pmic_ver);
}
#if 0
#if defined(CONFIG_MACH_JF_VZW) || defined(CONFIG_MACH_JF_LGT)
if (kernel_sec_get_debug_level() == KERNEL_SEC_DEBUG_LEVEL_LOW) {
pm8xxx_hard_reset_config(PM8XXX_DISABLE_HARD_RESET);
max77803_write_reg(i2c, MAX77803_PMIC_REG_MAINCTRL1, 0x04);
} else {
pm8xxx_hard_reset_config(PM8XXX_DISABLE_HARD_RESET);
max77803_write_reg(i2c, MAX77803_PMIC_REG_MAINCTRL1, 0x0c);
}
#else
if (kernel_sec_get_debug_level() == KERNEL_SEC_DEBUG_LEVEL_LOW) {
max77803_write_reg(i2c, MAX77803_PMIC_REG_MAINCTRL1, 0x04);
} else {
pm8xxx_hard_reset_config(PM8XXX_DISABLE_HARD_RESET);
max77803_write_reg(i2c, MAX77803_PMIC_REG_MAINCTRL1, 0x0c);
}
#endif
#endif
max77803_update_reg(i2c, MAX77803_CHG_REG_SAFEOUT_CTRL, 0x00, 0x30);
max77803->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
i2c_set_clientdata(max77803->muic, max77803);
max77803->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
i2c_set_clientdata(max77803->haptic, max77803);
ret = max77803_irq_init(max77803);
if (ret < 0)
goto err_irq_init;
ret = mfd_add_devices(max77803->dev, -1, max77803_devs,
ARRAY_SIZE(max77803_devs), NULL, 0);
if (ret < 0)
goto err_mfd;
device_init_wakeup(max77803->dev, pdata->wakeup);
return ret;
err_mfd:
mfd_remove_devices(max77803->dev);
max77803_irq_exit(max77803);
err_irq_init:
i2c_unregister_device(max77803->muic);
i2c_unregister_device(max77803->haptic);
err:
kfree(max77803);
return ret;
}
static int max77803_i2c_remove(struct i2c_client *i2c)
{
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
mfd_remove_devices(max77803->dev);
i2c_unregister_device(max77803->muic);
i2c_unregister_device(max77803->haptic);
kfree(max77803);
return 0;
}
static const struct i2c_device_id max77803_i2c_id[] = {
{ "max77803", TYPE_MAX77803 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max77803_i2c_id);
static struct of_device_id max77803_i2c_match_table[] = {
{ .compatible = "max77803,i2c", },
{ },
};
MODULE_DEVICE_TABLE(of, max77803_i2c_match_table);
#ifdef CONFIG_PM
static int max77803_suspend(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
if (device_may_wakeup(dev))
enable_irq_wake(max77803->irq);
return 0;
}
static int max77803_resume(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
if (device_may_wakeup(dev))
disable_irq_wake(max77803->irq);
return max77803_irq_resume(max77803);
}
#else
#define max77803_suspend NULL
#define max77803_resume NULL
#endif /* CONFIG_PM */
#ifdef CONFIG_HIBERNATION
u8 max77803_dumpaddr_pmic[] = {
MAX77803_LED_REG_IFLASH1,
MAX77803_LED_REG_IFLASH2,
MAX77803_LED_REG_ITORCH,
MAX77803_LED_REG_ITORCHTORCHTIMER,
MAX77803_LED_REG_FLASH_TIMER,
MAX77803_LED_REG_FLASH_EN,
MAX77803_LED_REG_MAX_FLASH1,
MAX77803_LED_REG_MAX_FLASH2,
MAX77803_LED_REG_VOUT_CNTL,
MAX77803_LED_REG_VOUT_FLASH1,
MAX77803_LED_REG_FLASH_INT_STATUS,
MAX77803_PMIC_REG_TOPSYS_INT_MASK,
MAX77803_PMIC_REG_MAINCTRL1,
MAX77803_PMIC_REG_LSCNFG,
MAX77803_CHG_REG_CHG_INT_MASK,
MAX77803_CHG_REG_CHG_CNFG_00,
MAX77803_CHG_REG_CHG_CNFG_01,
MAX77803_CHG_REG_CHG_CNFG_02,
MAX77803_CHG_REG_CHG_CNFG_03,
MAX77803_CHG_REG_CHG_CNFG_04,
MAX77803_CHG_REG_CHG_CNFG_05,
MAX77803_CHG_REG_CHG_CNFG_06,
MAX77803_CHG_REG_CHG_CNFG_07,
MAX77803_CHG_REG_CHG_CNFG_08,
MAX77803_CHG_REG_CHG_CNFG_09,
MAX77803_CHG_REG_CHG_CNFG_10,
MAX77803_CHG_REG_CHG_CNFG_11,
MAX77803_CHG_REG_CHG_CNFG_12,
MAX77803_CHG_REG_CHG_CNFG_13,
MAX77803_CHG_REG_CHG_CNFG_14,
MAX77803_CHG_REG_SAFEOUT_CTRL,
};
u8 max77803_dumpaddr_muic[] = {
MAX77803_MUIC_REG_INTMASK1,
MAX77803_MUIC_REG_INTMASK2,
MAX77803_MUIC_REG_INTMASK3,
MAX77803_MUIC_REG_CDETCTRL1,
MAX77803_MUIC_REG_CDETCTRL2,
MAX77803_MUIC_REG_CTRL1,
MAX77803_MUIC_REG_CTRL2,
MAX77803_MUIC_REG_CTRL3,
};
u8 max77803_dumpaddr_haptic[] = {
MAX77803_HAPTIC_REG_CONFIG1,
MAX77803_HAPTIC_REG_CONFIG2,
MAX77803_HAPTIC_REG_CONFIG_CHNL,
MAX77803_HAPTIC_REG_CONFG_CYC1,
MAX77803_HAPTIC_REG_CONFG_CYC2,
MAX77803_HAPTIC_REG_CONFIG_PER1,
MAX77803_HAPTIC_REG_CONFIG_PER2,
MAX77803_HAPTIC_REG_CONFIG_PER3,
MAX77803_HAPTIC_REG_CONFIG_PER4,
MAX77803_HAPTIC_REG_CONFIG_DUTY1,
MAX77803_HAPTIC_REG_CONFIG_DUTY2,
MAX77803_HAPTIC_REG_CONFIG_PWM1,
MAX77803_HAPTIC_REG_CONFIG_PWM2,
MAX77803_HAPTIC_REG_CONFIG_PWM3,
MAX77803_HAPTIC_REG_CONFIG_PWM4,
};
static int max77803_freeze(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int i;
for (i = 0; i < ARRAY_SIZE(max77803_dumpaddr_pmic); i++)
max77803_read_reg(i2c, max77803_dumpaddr_pmic[i],
&max77803->reg_pmic_dump[i]);
for (i = 0; i < ARRAY_SIZE(max77803_dumpaddr_muic); i++)
max77803_read_reg(i2c, max77803_dumpaddr_muic[i],
&max77803->reg_muic_dump[i]);
for (i = 0; i < ARRAY_SIZE(max77803_dumpaddr_haptic); i++)
max77803_read_reg(i2c, max77803_dumpaddr_haptic[i],
&max77803->reg_haptic_dump[i]);
disable_irq(max77803->irq);
return 0;
}
static int max77803_restore(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct max77803_dev *max77803 = i2c_get_clientdata(i2c);
int i;
enable_irq(max77803->irq);
for (i = 0; i < ARRAY_SIZE(max77803_dumpaddr_pmic); i++)
max77803_write_reg(i2c, max77803_dumpaddr_pmic[i],
max77803->reg_pmic_dump[i]);
for (i = 0; i < ARRAY_SIZE(max77803_dumpaddr_muic); i++)
max77803_write_reg(i2c, max77803_dumpaddr_muic[i],
max77803->reg_muic_dump[i]);
for (i = 0; i < ARRAY_SIZE(max77803_dumpaddr_haptic); i++)
max77803_write_reg(i2c, max77803_dumpaddr_haptic[i],
max77803->reg_haptic_dump[i]);
return 0;
}
#endif
const struct dev_pm_ops max77803_pm = {
.suspend = max77803_suspend,
.resume = max77803_resume,
#ifdef CONFIG_HIBERNATION
.freeze = max77803_freeze,
.thaw = max77803_restore,
.restore = max77803_restore,
#endif
};
static struct i2c_driver max77803_i2c_driver = {
.driver = {
.name = "max77803",
.owner = THIS_MODULE,
.pm = &max77803_pm,
.of_match_table = max77803_i2c_match_table,
},
.probe = max77803_i2c_probe,
.remove = max77803_i2c_remove,
.id_table = max77803_i2c_id,
};
//module_i2c_driver(max77803_i2c_driver);
static int __init max77803_i2c_init(void)
{
return i2c_add_driver(&max77803_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(max77803_i2c_init);
static void __exit max77803_i2c_exit(void)
{
i2c_del_driver(&max77803_i2c_driver);
}
module_exit(max77803_i2c_exit);
MODULE_DESCRIPTION("MAXIM 77803 multi-function core driver");
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
MODULE_LICENSE("GPL");
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