80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* MP2629 parent driver for ADC and battery charger
|
||
|
|
*
|
||
|
|
* Copyright 2020 Monolithic Power Systems, Inc
|
||
|
|
*
|
||
|
|
* Author: Saravanan Sekar <sravanhome@gmail.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/mfd/core.h>
|
||
|
|
#include <linux/mfd/mp2629.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/regmap.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
|
||
|
|
static const struct mfd_cell mp2629_cell[] = {
|
||
|
|
{
|
||
|
|
.name = "mp2629_adc",
|
||
|
|
.of_compatible = "mps,mp2629_adc",
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.name = "mp2629_charger",
|
||
|
|
.of_compatible = "mps,mp2629_charger",
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct regmap_config mp2629_regmap_config = {
|
||
|
|
.reg_bits = 8,
|
||
|
|
.val_bits = 8,
|
||
|
|
.max_register = 0x17,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int mp2629_probe(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct mp2629_data *ddata;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
|
||
|
|
if (!ddata)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
ddata->dev = &client->dev;
|
||
|
|
i2c_set_clientdata(client, ddata);
|
||
|
|
|
||
|
|
ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config);
|
||
|
|
if (IS_ERR(ddata->regmap)) {
|
||
|
|
dev_err(ddata->dev, "Failed to allocate regmap\n");
|
||
|
|
return PTR_ERR(ddata->regmap);
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, mp2629_cell,
|
||
|
|
ARRAY_SIZE(mp2629_cell), NULL, 0, NULL);
|
||
|
|
if (ret)
|
||
|
|
dev_err(ddata->dev, "Failed to register sub-devices %d\n", ret);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct of_device_id mp2629_of_match[] = {
|
||
|
|
{ .compatible = "mps,mp2629"},
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, mp2629_of_match);
|
||
|
|
|
||
|
|
static struct i2c_driver mp2629_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "mp2629",
|
||
|
|
.of_match_table = mp2629_of_match,
|
||
|
|
},
|
||
|
|
.probe_new = mp2629_probe,
|
||
|
|
};
|
||
|
|
module_i2c_driver(mp2629_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
|
||
|
|
MODULE_DESCRIPTION("MP2629 Battery charger parent driver");
|
||
|
|
MODULE_LICENSE("GPL");
|