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/*
* Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
*
* Author: Keerthy <j-keerthy@ti.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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/mfd/lp873x.h>
static const struct regmap_config lp873x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = LP873X_REG_MAX,
};
static const struct mfd_cell lp873x_cells[] = {
{ .name = "lp873x-regulator", },
{ .name = "lp873x-gpio", },
};
static int lp873x_probe(struct i2c_client *client,
const struct i2c_device_id *ids)
{
struct lp873x *lp873;
int ret;
unsigned int otpid;
lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
if (!lp873)
return -ENOMEM;
lp873->dev = &client->dev;
lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
if (IS_ERR(lp873->regmap)) {
ret = PTR_ERR(lp873->regmap);
dev_err(lp873->dev,
"Failed to initialize register map: %d\n", ret);
return ret;
}
mutex_init(&lp873->lock);
ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
if (ret) {
dev_err(lp873->dev, "Failed to read OTP ID\n");
return ret;
}
lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
i2c_set_clientdata(client, lp873);
ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
return ret;
}
static const struct of_device_id of_lp873x_match_table[] = {
{ .compatible = "ti,lp8733", },
{ .compatible = "ti,lp8732", },
{}
};
MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
static const struct i2c_device_id lp873x_id_table[] = {
{ "lp873x", 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
static struct i2c_driver lp873x_driver = {
.driver = {
.name = "lp873x",
.of_match_table = of_lp873x_match_table,
},
.probe = lp873x_probe,
.id_table = lp873x_id_table,
};
module_i2c_driver(lp873x_driver);
MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver");
MODULE_LICENSE("GPL v2");
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