mirror of https://gitee.com/openkylin/linux.git
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*
|
|
* Copyright 2009-2010 Creative Product Design
|
|
* Marc Reilly marc@cpdesign.com.au
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it under
|
|
* the terms of the GNU General Public License version 2 as published by the
|
|
* Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/mc13xxx.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/err.h>
|
|
|
|
#include "mc13xxx.h"
|
|
|
|
static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
|
|
{
|
|
.name = "mc13892",
|
|
.driver_data = MC13XXX_ID_MC13892,
|
|
}, {
|
|
/* sentinel */
|
|
}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
|
|
|
|
static const struct of_device_id mc13xxx_dt_ids[] = {
|
|
{
|
|
.compatible = "fsl,mc13892",
|
|
.data = (void *) &mc13xxx_i2c_device_id[0],
|
|
}, {
|
|
/* sentinel */
|
|
}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
|
|
|
|
static struct regmap_config mc13xxx_regmap_i2c_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 24,
|
|
|
|
.max_register = MC13XXX_NUMREGS,
|
|
|
|
.cache_type = REGCACHE_NONE,
|
|
};
|
|
|
|
static int mc13xxx_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct mc13xxx *mc13xxx;
|
|
struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev);
|
|
int ret;
|
|
|
|
mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
|
|
if (!mc13xxx)
|
|
return -ENOMEM;
|
|
|
|
dev_set_drvdata(&client->dev, mc13xxx);
|
|
|
|
mc13xxx->dev = &client->dev;
|
|
mutex_init(&mc13xxx->lock);
|
|
|
|
mc13xxx->regmap = devm_regmap_init_i2c(client,
|
|
&mc13xxx_regmap_i2c_config);
|
|
if (IS_ERR(mc13xxx->regmap)) {
|
|
ret = PTR_ERR(mc13xxx->regmap);
|
|
dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n",
|
|
ret);
|
|
dev_set_drvdata(&client->dev, NULL);
|
|
return ret;
|
|
}
|
|
|
|
ret = mc13xxx_common_init(mc13xxx, pdata, client->irq);
|
|
|
|
if (ret == 0 && (id->driver_data != mc13xxx->ictype))
|
|
dev_warn(mc13xxx->dev,
|
|
"device id doesn't match auto detection!\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mc13xxx_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev);
|
|
|
|
mc13xxx_common_cleanup(mc13xxx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver mc13xxx_i2c_driver = {
|
|
.id_table = mc13xxx_i2c_device_id,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "mc13xxx",
|
|
.of_match_table = mc13xxx_dt_ids,
|
|
},
|
|
.probe = mc13xxx_i2c_probe,
|
|
.remove = mc13xxx_i2c_remove,
|
|
};
|
|
|
|
static int __init mc13xxx_i2c_init(void)
|
|
{
|
|
return i2c_add_driver(&mc13xxx_i2c_driver);
|
|
}
|
|
subsys_initcall(mc13xxx_i2c_init);
|
|
|
|
static void __exit mc13xxx_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&mc13xxx_i2c_driver);
|
|
}
|
|
module_exit(mc13xxx_i2c_exit);
|
|
|
|
MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
|
|
MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
|
|
MODULE_LICENSE("GPL v2");
|