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/*
* sky81452.c SKY81452 MFD driver
*
* Copyright 2014 Skyworks Solutions Inc.
* Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
*
* 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.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#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,
const struct i2c_device_id *id)
{
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[0].platform_data = pdata->bl_pdata;
cells[0].pdata_size = sizeof(*pdata->bl_pdata);
cells[1].name = "sky81452-regulator";
cells[1].platform_data = pdata->regulator_init_data;
cells[1].pdata_size = sizeof(*pdata->regulator_init_data);
ret = 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 int sky81452_remove(struct i2c_client *client)
{
mfd_remove_devices(&client->dev);
return 0;
}
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,
.remove = sky81452_remove,
.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");
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