![Sangbeom Kim](/assets/img/avatar_default.png)
S5M series are pmic including mutiple functional devices. It can support PMIC, RTC, Battery charger, codec. This patch implement core driver for s5m series. Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
177 lines
4.1 KiB
C
177 lines
4.1 KiB
C
/*
|
|
* s5m87xx.c
|
|
*
|
|
* Copyright (c) 2011 Samsung Electronics Co., Ltd
|
|
* http://www.samsung.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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/s5m87xx/s5m-core.h>
|
|
#include <linux/mfd/s5m87xx/s5m-pmic.h>
|
|
#include <linux/mfd/s5m87xx/s5m-rtc.h>
|
|
#include <linux/regmap.h>
|
|
|
|
static struct mfd_cell s5m87xx_devs[] = {
|
|
{
|
|
.name = "s5m8767-pmic",
|
|
}, {
|
|
.name = "s5m-rtc",
|
|
},
|
|
};
|
|
|
|
int s5m_reg_read(struct s5m87xx_dev *s5m87xx, u8 reg, void *dest)
|
|
{
|
|
return regmap_read(s5m87xx->regmap, reg, dest);
|
|
}
|
|
EXPORT_SYMBOL_GPL(s5m_reg_read);
|
|
|
|
int s5m_bulk_read(struct s5m87xx_dev *s5m87xx, u8 reg, int count, u8 *buf)
|
|
{
|
|
return regmap_bulk_read(s5m87xx->regmap, reg, buf, count);;
|
|
}
|
|
EXPORT_SYMBOL_GPL(s5m_bulk_read);
|
|
|
|
int s5m_reg_write(struct s5m87xx_dev *s5m87xx, u8 reg, u8 value)
|
|
{
|
|
return regmap_write(s5m87xx->regmap, reg, value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(s5m_reg_write);
|
|
|
|
int s5m_bulk_write(struct s5m87xx_dev *s5m87xx, u8 reg, int count, u8 *buf)
|
|
{
|
|
return regmap_raw_write(s5m87xx->regmap, reg, buf, count * sizeof(u16));
|
|
}
|
|
EXPORT_SYMBOL_GPL(s5m_bulk_write);
|
|
|
|
int s5m_reg_update(struct s5m87xx_dev *s5m87xx, u8 reg, u8 val, u8 mask)
|
|
{
|
|
return regmap_update_bits(s5m87xx->regmap, reg, mask, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(s5m_reg_update);
|
|
|
|
static struct regmap_config s5m_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
};
|
|
|
|
static int s5m87xx_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct s5m_platform_data *pdata = i2c->dev.platform_data;
|
|
struct s5m87xx_dev *s5m87xx;
|
|
int ret = 0;
|
|
int error;
|
|
|
|
s5m87xx = kzalloc(sizeof(struct s5m87xx_dev), GFP_KERNEL);
|
|
if (s5m87xx == NULL)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, s5m87xx);
|
|
s5m87xx->dev = &i2c->dev;
|
|
s5m87xx->i2c = i2c;
|
|
s5m87xx->irq = i2c->irq;
|
|
s5m87xx->type = id->driver_data;
|
|
|
|
if (pdata) {
|
|
s5m87xx->device_type = pdata->device_type;
|
|
s5m87xx->ono = pdata->ono;
|
|
s5m87xx->irq_base = pdata->irq_base;
|
|
s5m87xx->wakeup = pdata->wakeup;
|
|
}
|
|
|
|
s5m87xx->regmap = regmap_init_i2c(i2c, &s5m_regmap_config);
|
|
if (IS_ERR(s5m87xx->regmap)) {
|
|
error = PTR_ERR(s5m87xx->regmap);
|
|
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
|
|
error);
|
|
goto err;
|
|
}
|
|
|
|
s5m87xx->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
|
|
i2c_set_clientdata(s5m87xx->rtc, s5m87xx);
|
|
|
|
if (pdata->cfg_pmic_irq)
|
|
pdata->cfg_pmic_irq();
|
|
|
|
s5m_irq_init(s5m87xx);
|
|
|
|
pm_runtime_set_active(s5m87xx->dev);
|
|
|
|
ret = mfd_add_devices(s5m87xx->dev, -1,
|
|
s5m87xx_devs, ARRAY_SIZE(s5m87xx_devs),
|
|
NULL, 0);
|
|
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
return ret;
|
|
|
|
err:
|
|
mfd_remove_devices(s5m87xx->dev);
|
|
s5m_irq_exit(s5m87xx);
|
|
i2c_unregister_device(s5m87xx->rtc);
|
|
regmap_exit(s5m87xx->regmap);
|
|
kfree(s5m87xx);
|
|
return ret;
|
|
}
|
|
|
|
static int s5m87xx_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct s5m87xx_dev *s5m87xx = i2c_get_clientdata(i2c);
|
|
|
|
mfd_remove_devices(s5m87xx->dev);
|
|
s5m_irq_exit(s5m87xx);
|
|
i2c_unregister_device(s5m87xx->rtc);
|
|
regmap_exit(s5m87xx->regmap);
|
|
kfree(s5m87xx);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id s5m87xx_i2c_id[] = {
|
|
{ "s5m87xx", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, s5m87xx_i2c_id);
|
|
|
|
static struct i2c_driver s5m87xx_i2c_driver = {
|
|
.driver = {
|
|
.name = "s5m87xx",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = s5m87xx_i2c_probe,
|
|
.remove = s5m87xx_i2c_remove,
|
|
.id_table = s5m87xx_i2c_id,
|
|
};
|
|
|
|
static int __init s5m87xx_i2c_init(void)
|
|
{
|
|
return i2c_add_driver(&s5m87xx_i2c_driver);
|
|
}
|
|
|
|
subsys_initcall(s5m87xx_i2c_init);
|
|
|
|
static void __exit s5m87xx_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&s5m87xx_i2c_driver);
|
|
}
|
|
module_exit(s5m87xx_i2c_exit);
|
|
|
|
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
|
|
MODULE_DESCRIPTION("Core support for the S5M MFD");
|
|
MODULE_LICENSE("GPL");
|