hwmon: (pmbus) Add driver for Delta DPS-920AB PSU
This adds support for the Delta DPS-920AB PSU. Only missing feature is fan control which the PSU supports. Signed-off-by: Robert Marko <robert.marko@sartura.hr> Link: https://lore.kernel.org/r/20210607103431.2039073-1-robert.marko@sartura.hr [groeck: Add MODULE_IMPORT_NS(PMBUS);] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Robert Marko
Guenter Roeck
Родитель
bf8e0cd8d6
Коммит
3efbcee8d4
|
|
@ -0,0 +1,73 @@
|
|||
.. SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
Kernel driver dps920ab
|
||||
========================
|
||||
|
||||
Supported chips:
|
||||
|
||||
* Delta DPS920AB
|
||||
|
||||
Prefix: 'dps920ab'
|
||||
|
||||
Addresses scanned: -
|
||||
|
||||
Authors:
|
||||
Robert Marko <robert.marko@sartura.hr>
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This driver implements support for Delta DPS920AB 920W 54V DC single output
|
||||
power supply with PMBus support.
|
||||
|
||||
The driver is a client driver to the core PMBus driver.
|
||||
Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
|
||||
|
||||
|
||||
Usage Notes
|
||||
-----------
|
||||
|
||||
This driver does not auto-detect devices. You will have to instantiate the
|
||||
devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
|
||||
details.
|
||||
|
||||
|
||||
Sysfs entries
|
||||
-------------
|
||||
|
||||
======================= ======================================================
|
||||
curr1_label "iin"
|
||||
curr1_input Measured input current
|
||||
curr1_alarm Input current high alarm
|
||||
|
||||
curr2_label "iout1"
|
||||
curr2_input Measured output current
|
||||
curr2_max Maximum output current
|
||||
curr2_rated_max Maximum rated output current
|
||||
|
||||
in1_label "vin"
|
||||
in1_input Measured input voltage
|
||||
in1_alarm Input voltage alarm
|
||||
|
||||
in2_label "vout1"
|
||||
in2_input Measured output voltage
|
||||
in2_rated_min Minimum rated output voltage
|
||||
in2_rated_max Maximum rated output voltage
|
||||
in2_alarm Output voltage alarm
|
||||
|
||||
power1_label "pin"
|
||||
power1_input Measured input power
|
||||
power1_alarm Input power high alarm
|
||||
|
||||
power2_label "pout1"
|
||||
power2_input Measured output power
|
||||
power2_rated_max Maximum rated output power
|
||||
|
||||
temp[1-3]_input Measured temperature
|
||||
temp[1-3]_alarm Temperature alarm
|
||||
|
||||
fan1_alarm Fan 1 warning.
|
||||
fan1_fault Fan 1 fault.
|
||||
fan1_input Fan 1 speed in RPM.
|
||||
======================= ======================================================
|
||||
|
|
@ -53,6 +53,7 @@ Hardware Monitoring Kernel Drivers
|
|||
da9055
|
||||
dell-smm-hwmon
|
||||
dme1737
|
||||
dps920ab
|
||||
drivetemp
|
||||
ds1621
|
||||
ds620
|
||||
|
|
|
|||
|
|
@ -86,6 +86,15 @@ config SENSORS_IBM_CFFPS
|
|||
This driver can also be built as a module. If so, the module will
|
||||
be called ibm-cffps.
|
||||
|
||||
config SENSORS_DPS920AB
|
||||
tristate "Delta DPS920AB Power Supply"
|
||||
help
|
||||
If you say yes here you get hardware monitoring support for Delta
|
||||
DPS920AB Power Supplies.
|
||||
|
||||
This driver can also be built as a module. If so, the module will
|
||||
be called dps920ab.
|
||||
|
||||
config SENSORS_INSPUR_IPSPS
|
||||
tristate "INSPUR Power System Power Supply"
|
||||
help
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@ obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o
|
|||
obj-$(CONFIG_SENSORS_BPA_RS600) += bpa-rs600.o
|
||||
obj-$(CONFIG_SENSORS_FSP_3Y) += fsp-3y.o
|
||||
obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
|
||||
obj-$(CONFIG_SENSORS_DPS920AB) += dps920ab.o
|
||||
obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o
|
||||
obj-$(CONFIG_SENSORS_IR35221) += ir35221.o
|
||||
obj-$(CONFIG_SENSORS_IR36021) += ir36021.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,208 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
/*
|
||||
* Driver for Delta DPS920AB PSU
|
||||
*
|
||||
* Copyright (C) 2021 Delta Networks, Inc.
|
||||
* Copyright (C) 2021 Sartura Ltd.
|
||||
*/
|
||||
|
||||
#include <linux/debugfs.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of_device.h>
|
||||
#include "pmbus.h"
|
||||
|
||||
struct dps920ab_data {
|
||||
char *mfr_model;
|
||||
char *mfr_id;
|
||||
};
|
||||
|
||||
static int dps920ab_read_word_data(struct i2c_client *client, int page, int phase, int reg)
|
||||
{
|
||||
/*
|
||||
* This masks commands which are not supported.
|
||||
* PSU advertises that all features are supported,
|
||||
* in reality that unfortunately is not true.
|
||||
* So enable only those that the datasheet confirms.
|
||||
*/
|
||||
switch (reg) {
|
||||
case PMBUS_FAN_COMMAND_1:
|
||||
case PMBUS_IOUT_OC_WARN_LIMIT:
|
||||
case PMBUS_STATUS_WORD:
|
||||
case PMBUS_READ_VIN:
|
||||
case PMBUS_READ_IIN:
|
||||
case PMBUS_READ_VOUT:
|
||||
case PMBUS_READ_IOUT:
|
||||
case PMBUS_READ_TEMPERATURE_1:
|
||||
case PMBUS_READ_TEMPERATURE_2:
|
||||
case PMBUS_READ_TEMPERATURE_3:
|
||||
case PMBUS_READ_FAN_SPEED_1:
|
||||
case PMBUS_READ_POUT:
|
||||
case PMBUS_READ_PIN:
|
||||
case PMBUS_MFR_VOUT_MIN:
|
||||
case PMBUS_MFR_VOUT_MAX:
|
||||
case PMBUS_MFR_IOUT_MAX:
|
||||
case PMBUS_MFR_POUT_MAX:
|
||||
return pmbus_read_word_data(client, page, phase, reg);
|
||||
default:
|
||||
return -ENXIO;
|
||||
}
|
||||
}
|
||||
|
||||
static int dps920ab_write_word_data(struct i2c_client *client, int page, int reg,
|
||||
u16 word)
|
||||
{
|
||||
/*
|
||||
* This masks commands which are not supported.
|
||||
* PSU only has one R/W register and that is
|
||||
* for the fan.
|
||||
*/
|
||||
switch (reg) {
|
||||
case PMBUS_FAN_COMMAND_1:
|
||||
return pmbus_write_word_data(client, page, reg, word);
|
||||
default:
|
||||
return -EACCES;
|
||||
}
|
||||
}
|
||||
|
||||
static struct pmbus_driver_info dps920ab_info = {
|
||||
.pages = 1,
|
||||
|
||||
.format[PSC_VOLTAGE_IN] = linear,
|
||||
.format[PSC_VOLTAGE_OUT] = linear,
|
||||
.format[PSC_CURRENT_IN] = linear,
|
||||
.format[PSC_CURRENT_OUT] = linear,
|
||||
.format[PSC_POWER] = linear,
|
||||
.format[PSC_FAN] = linear,
|
||||
.format[PSC_TEMPERATURE] = linear,
|
||||
|
||||
.func[0] =
|
||||
PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
|
||||
PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT |
|
||||
PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
|
||||
PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12 |
|
||||
PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT |
|
||||
PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
|
||||
.read_word_data = dps920ab_read_word_data,
|
||||
.write_word_data = dps920ab_write_word_data,
|
||||
};
|
||||
|
||||
static int dps920ab_mfr_id_show(struct seq_file *s, void *data)
|
||||
{
|
||||
struct dps920ab_data *priv = s->private;
|
||||
|
||||
seq_printf(s, "%s\n", priv->mfr_id);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
DEFINE_SHOW_ATTRIBUTE(dps920ab_mfr_id);
|
||||
|
||||
static int dps920ab_mfr_model_show(struct seq_file *s, void *data)
|
||||
{
|
||||
struct dps920ab_data *priv = s->private;
|
||||
|
||||
seq_printf(s, "%s\n", priv->mfr_model);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
DEFINE_SHOW_ATTRIBUTE(dps920ab_mfr_model);
|
||||
|
||||
static void dps920ab_init_debugfs(struct dps920ab_data *data, struct i2c_client *client)
|
||||
{
|
||||
struct dentry *debugfs_dir;
|
||||
struct dentry *root;
|
||||
|
||||
root = pmbus_get_debugfs_dir(client);
|
||||
if (!root)
|
||||
return;
|
||||
|
||||
debugfs_dir = debugfs_create_dir(client->name, root);
|
||||
if (!debugfs_dir)
|
||||
return;
|
||||
|
||||
debugfs_create_file("mfr_id",
|
||||
0400,
|
||||
debugfs_dir,
|
||||
data,
|
||||
&dps920ab_mfr_id_fops);
|
||||
|
||||
debugfs_create_file("mfr_model",
|
||||
0400,
|
||||
debugfs_dir,
|
||||
data,
|
||||
&dps920ab_mfr_model_fops);
|
||||
}
|
||||
|
||||
static int dps920ab_probe(struct i2c_client *client)
|
||||
{
|
||||
u8 buf[I2C_SMBUS_BLOCK_MAX + 1];
|
||||
struct dps920ab_data *data;
|
||||
int ret;
|
||||
|
||||
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
|
||||
if (!data)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf);
|
||||
if (ret < 0) {
|
||||
dev_err(&client->dev, "Failed to read Manufacturer ID\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
buf[ret] = '\0';
|
||||
if (ret != 5 || strncmp(buf, "DELTA", 5)) {
|
||||
buf[ret] = '\0';
|
||||
dev_err(&client->dev, "Unsupported Manufacturer ID '%s'\n", buf);
|
||||
return -ENODEV;
|
||||
}
|
||||
data->mfr_id = devm_kstrdup(&client->dev, buf, GFP_KERNEL);
|
||||
if (!data->mfr_id)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
|
||||
if (ret < 0) {
|
||||
dev_err(&client->dev, "Failed to read Manufacturer Model\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
buf[ret] = '\0';
|
||||
if (ret != 11 || strncmp(buf, "DPS-920AB", 9)) {
|
||||
dev_err(&client->dev, "Unsupported Manufacturer Model '%s'\n", buf);
|
||||
return -ENODEV;
|
||||
}
|
||||
data->mfr_model = devm_kstrdup(&client->dev, buf, GFP_KERNEL);
|
||||
if (!data->mfr_model)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = pmbus_do_probe(client, &dps920ab_info);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
dps920ab_init_debugfs(data, client);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id __maybe_unused dps920ab_of_match[] = {
|
||||
{ .compatible = "delta,dps920ab", },
|
||||
{}
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE(of, dps920ab_of_match);
|
||||
|
||||
static struct i2c_driver dps920ab_driver = {
|
||||
.driver = {
|
||||
.name = "dps920ab",
|
||||
.of_match_table = of_match_ptr(dps920ab_of_match),
|
||||
},
|
||||
.probe_new = dps920ab_probe,
|
||||
};
|
||||
|
||||
module_i2c_driver(dps920ab_driver);
|
||||
|
||||
MODULE_AUTHOR("Robert Marko <robert.marko@sartura.hr>");
|
||||
MODULE_DESCRIPTION("PMBus driver for Delta DPS920AB PSU");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_IMPORT_NS(PMBUS);
|
||||
Загрузка…
Ссылка в новой задаче