mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
00669d196c
Add the pmbus driver for the Infineon ir38064 voltage regulator. VOUT_MODE is not supported by the device. The driver fakes linear16 mode with exponent value -8. The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however this driver does not enable them. Signed-off-by: Maxim Sloyko <maxims@google.com> Signed-off-by: Patrick Venture <venture@google.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Hardware monitoring driver for Infineon IR38064
|
|
*
|
|
* Copyright (c) 2017 Google Inc
|
|
*
|
|
* VOUT_MODE is not supported by the device. The driver fakes VOUT linear16
|
|
* mode with exponent value -8 as direct mode with m=256/b=0/R=0.
|
|
*
|
|
* The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however
|
|
* this driver does not currently support them.
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include "pmbus.h"
|
|
|
|
static struct pmbus_driver_info ir38064_info = {
|
|
.pages = 1,
|
|
.format[PSC_VOLTAGE_IN] = linear,
|
|
.format[PSC_VOLTAGE_OUT] = direct,
|
|
.format[PSC_CURRENT_OUT] = linear,
|
|
.format[PSC_POWER] = linear,
|
|
.format[PSC_TEMPERATURE] = linear,
|
|
.m[PSC_VOLTAGE_OUT] = 256,
|
|
.b[PSC_VOLTAGE_OUT] = 0,
|
|
.R[PSC_VOLTAGE_OUT] = 0,
|
|
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
|
|
| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
|
|
| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
|
|
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
|
|
| PMBUS_HAVE_POUT,
|
|
};
|
|
|
|
static int ir38064_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
return pmbus_do_probe(client, id, &ir38064_info);
|
|
}
|
|
|
|
static const struct i2c_device_id ir38064_id[] = {
|
|
{"ir38064", 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, ir38064_id);
|
|
|
|
/* This is the driver that will be inserted */
|
|
static struct i2c_driver ir38064_driver = {
|
|
.driver = {
|
|
.name = "ir38064",
|
|
},
|
|
.probe = ir38064_probe,
|
|
.remove = pmbus_do_remove,
|
|
.id_table = ir38064_id,
|
|
};
|
|
|
|
module_i2c_driver(ir38064_driver);
|
|
|
|
MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>");
|
|
MODULE_DESCRIPTION("PMBus driver for Infineon IR38064");
|
|
MODULE_LICENSE("GPL");
|