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// SPDX-License-Identifier: GPL-2.0+
/*
* Hardware monitoring driver for STMicroelectronics digital controller PM6764TR
*/
#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"
#define PM6764TR_PMBUS_READ_VOUT 0xD4
static int pm6764tr_read_word_data(struct i2c_client *client, int page, int phase, int reg)
{
int ret;
switch (reg) {
case PMBUS_VIRT_READ_VMON:
ret = pmbus_read_word_data(client, page, phase, PM6764TR_PMBUS_READ_VOUT);
break;
default:
ret = -ENODATA;
break;
}
return ret;
}
static struct pmbus_driver_info pm6764tr_info = {
.pages = 1,
.format[PSC_VOLTAGE_IN] = linear,
.format[PSC_VOLTAGE_OUT] = vid,
.format[PSC_TEMPERATURE] = linear,
.format[PSC_CURRENT_OUT] = linear,
.format[PSC_POWER] = linear,
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_VMON |
PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT |
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_word_data = pm6764tr_read_word_data,
};
static int pm6764tr_probe(struct i2c_client *client)
{
return pmbus_do_probe(client, &pm6764tr_info);
}
static const struct i2c_device_id pm6764tr_id[] = {
{"pm6764tr", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, pm6764tr_id);
static const struct of_device_id __maybe_unused pm6764tr_of_match[] = {
{.compatible = "st,pm6764tr"},
{}
};
/* This is the driver that will be inserted */
static struct i2c_driver pm6764tr_driver = {
.driver = {
.name = "pm6764tr",
.of_match_table = of_match_ptr(pm6764tr_of_match),
},
.probe_new = pm6764tr_probe,
.id_table = pm6764tr_id,
};
module_i2c_driver(pm6764tr_driver);
MODULE_AUTHOR("Charles Hsu");
MODULE_DESCRIPTION("PMBus driver for ST PM6764TR");
MODULE_LICENSE("GPL");
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