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// SPDX-License-Identifier: GPL-2.0+
/*
* Hardware monitoring driver for TEXAS TPS546D24 buck converter
*/
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pmbus.h>
#include "pmbus.h"
static struct pmbus_driver_info tps546d24_info = {
.pages = 1,
.format[PSC_VOLTAGE_IN] = linear,
.format[PSC_VOLTAGE_OUT] = linear,
.format[PSC_TEMPERATURE] = linear,
.format[PSC_CURRENT_OUT] = linear,
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
| PMBUS_HAVE_IOUT | PMBUS_HAVE_VOUT
| PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
};
static int tps546d24_probe(struct i2c_client *client)
{
int reg;
reg = i2c_smbus_read_byte_data(client, PMBUS_VOUT_MODE);
if (reg < 0)
return reg;
if (reg & 0x80) {
int err;
err = i2c_smbus_write_byte_data(client, PMBUS_VOUT_MODE, reg & 0x7f);
if (err < 0)
return err;
}
return pmbus_do_probe(client, &tps546d24_info);
}
static const struct i2c_device_id tps546d24_id[] = {
{"tps546d24", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, tps546d24_id);
static const struct of_device_id __maybe_unused tps546d24_of_match[] = {
{.compatible = "ti,tps546d24"},
{}
};
MODULE_DEVICE_TABLE(of, tps546d24_of_match);
/* This is the driver that will be inserted */
static struct i2c_driver tps546d24_driver = {
.driver = {
.name = "tps546d24",
.of_match_table = of_match_ptr(tps546d24_of_match),
},
.probe_new = tps546d24_probe,
.id_table = tps546d24_id,
};
module_i2c_driver(tps546d24_driver);
MODULE_AUTHOR("Duke Du <dukedu83@gmail.com>");
MODULE_DESCRIPTION("PMBus driver for TI tps546d24");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS(PMBUS);
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