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hwmon: (pmbus) Add support for Infineon Multi-phase xdpe122 family controllers

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Add support for devices XDPE12254, XDPE12284.

All these device support two pages.
The below lists of VOUT_MODE command readout with their related VID
protocols, Digital to Analog Converter steps, supported by these
devices:
VR12.0 mode, 5-mV DAC - 0x01;
VR12.5 mode, 10-mV DAC - 0x02;
IMVP9 mode, 5-mV DAC - 0x03;
AMD mode 6.25mV - 0x10.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Link: https://lore.kernel.org/r/20200113150841.17670-5-vadimp@mellanox.com
[groeck: Added missing break statement]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Vadim Pasternak 2020-01-13 15:08:39 +00:00 committed by Guenter Roeck
parent 583dc92127
commit aaafb7c8eb
3 changed files with 127 additions and 0 deletions
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9
drivers/hwmon/pmbus/Kconfig
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@ -237,6 +237,15 @@ config SENSORS_UCD9200
This driver can also be built as a module. If so, the module will
be called ucd9200.
config SENSORS_XDPE122
tristate "Infineon XDPE122 family"
help
If you say yes here you get hardware monitoring support for Infineon
XDPE12254, XDPE12284, device.
This driver can also be built as a module. If so, the module will
be called xdpe12284.
config SENSORS_ZL6100
tristate "Intersil ZL6100 and compatibles"
help

1
drivers/hwmon/pmbus/Makefile
View File

@ -27,4 +27,5 @@ obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o
obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
obj-$(CONFIG_SENSORS_XDPE122) += xdpe12284.o
obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o

117
drivers/hwmon/pmbus/xdpe12284.c Normal file
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@ -0,0 +1,117 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Hardware monitoring driver for Infineon Multi-phase Digital VR Controllers
*
* Copyright (c) 2020 Mellanox Technologies. All rights reserved.
*/
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include "pmbus.h"
#define XDPE122_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */
#define XDPE122_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */
#define XDPE122_PROT_IMVP9_10MV 0x03 /* IMVP9 mode, 10-mV DAC */
#define XDPE122_AMD_625MV 0x10 /* AMD mode 6.25mV */
#define XDPE122_PAGE_NUM 2
static int xdpe122_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
u8 vout_params;
int i, ret;
for (i = 0; i < XDPE122_PAGE_NUM; i++) {
/* Read the register with VOUT scaling value.*/
ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE);
if (ret < 0)
return ret;
vout_params = ret & GENMASK(4, 0);
switch (vout_params) {
case XDPE122_PROT_VR12_5_10MV:
info->vrm_version[i] = vr13;
break;
case XDPE122_PROT_VR12_5MV:
info->vrm_version[i] = vr12;
break;
case XDPE122_PROT_IMVP9_10MV:
info->vrm_version[i] = imvp9;
break;
case XDPE122_AMD_625MV:
info->vrm_version[i] = amd625mv;
break;
default:
return -EINVAL;
}
}
return 0;
}
static struct pmbus_driver_info xdpe122_info = {
.pages = XDPE122_PAGE_NUM,
.format[PSC_VOLTAGE_IN] = linear,
.format[PSC_VOLTAGE_OUT] = vid,
.format[PSC_TEMPERATURE] = linear,
.format[PSC_CURRENT_IN] = linear,
.format[PSC_CURRENT_OUT] = linear,
.format[PSC_POWER] = linear,
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
.func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
.identify = xdpe122_identify,
};
static int xdpe122_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pmbus_driver_info *info;
info = devm_kmemdup(&client->dev, &xdpe122_info, sizeof(*info),
GFP_KERNEL);
if (!info)
return -ENOMEM;
return pmbus_do_probe(client, id, info);
}
static const struct i2c_device_id xdpe122_id[] = {
{"xdpe12254", 0},
{"xdpe12284", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, xdpe122_id);
static const struct of_device_id __maybe_unused xdpe122_of_match[] = {
{.compatible = "infineon, xdpe12254"},
{.compatible = "infineon, xdpe12284"},
{}
};
MODULE_DEVICE_TABLE(of, xdpe122_of_match);
static struct i2c_driver xdpe122_driver = {
.driver = {
.name = "xdpe12284",
.of_match_table = of_match_ptr(xdpe122_of_match),
},
.probe = xdpe122_probe,
.remove = pmbus_do_remove,
.id_table = xdpe122_id,
};
module_i2c_driver(xdpe122_driver);
MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
MODULE_DESCRIPTION("PMBus driver for Infineon XDPE122 family");
MODULE_LICENSE("GPL");