// SPDX-License-Identifier: GPL-2.0-only
/*
* sky81452.c SKY81452 MFD driver
*
* Copyright 2014 Skyworks Solutions Inc.
* Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/mfd/core.h>
#include <linux/mfd/sky81452.h>
static const struct regmap_config sky81452_config = {
.reg_bits = 8,
.val_bits = 8,
};
static int sky81452_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
const struct sky81452_platform_data *pdata = dev_get_platdata(dev);
struct mfd_cell cells[2];
struct regmap *regmap;
int ret;
if (!pdata) {
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
}
regmap = devm_regmap_init_i2c(client, &sky81452_config);
if (IS_ERR(regmap)) {
dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap));
return PTR_ERR(regmap);
}
i2c_set_clientdata(client, regmap);
memset(cells, 0, sizeof(cells));
cells[0].name = "sky81452-backlight";
cells[0].of_compatible = "skyworks,sky81452-backlight";
cells[1].name = "sky81452-regulator";
cells[1].platform_data = pdata->regulator_init_data;
cells[1].pdata_size = sizeof(*pdata->regulator_init_data);
ret = devm_mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells),
NULL, 0, NULL);
if (ret)
dev_err(dev, "failed to add child devices. err=%d\n", ret);
return ret;
}
static const struct i2c_device_id sky81452_ids[] = {
{ "sky81452" },
{ }
};
MODULE_DEVICE_TABLE(i2c, sky81452_ids);
#ifdef CONFIG_OF
static const struct of_device_id sky81452_of_match[] = {
{ .compatible = "skyworks,sky81452", },
{ }
};
MODULE_DEVICE_TABLE(of, sky81452_of_match);
#endif
static struct i2c_driver sky81452_driver = {
.driver = {
.name = "sky81452",
.of_match_table = of_match_ptr(sky81452_of_match),
},
.probe = sky81452_probe,
.id_table = sky81452_ids,
};
module_i2c_driver(sky81452_driver);
MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver");
MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
MODULE_LICENSE("GPL v2");
