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hwmon: (pmbus) Add driver for BluTek BPA-RS600

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The BPA-RS600 is a compact 600W AC to DC removable power supply module.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210317040231.21490-3-chris.packham@alliedtelesis.co.nz
[groeck: Added bpa-rs600 to index.rst]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Chris Packham 2021-03-17 17:02:31 +13:00 committed by Guenter Roeck
parent 90e85e6309
commit 15b2703e5e
5 changed files with 257 additions and 0 deletions
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74
Documentation/hwmon/bpa-rs600.rst Normal file
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@ -0,0 +1,74 @@
.. SPDX-License-Identifier: GPL-2.0
Kernel driver bpa-rs600
=======================
Supported chips:
* BPA-RS600-120
Datasheet: Publicly available at the BluTek website
http://blutekpower.com/wp-content/uploads/2019/01/BPA-RS600-120-07-19-2018.pdf
Authors:
- Chris Packham <chris.packham@alliedtelesis.co.nz>
Description
-----------
The BPA-RS600 is a compact 600W removable power supply module.
Usage Notes
-----------
This driver does not probe for PMBus devices. You will have to instantiate
devices explicitly.
Sysfs attributes
----------------
======================= ============================================
curr1_label "iin"
curr1_input Measured input current
curr1_max Maximum input current
curr1_max_alarm Input current high alarm
curr2_label "iout1"
curr2_input Measured output current
curr2_max Maximum output current
curr2_max_alarm Output current high alarm
fan1_input Measured fan speed
fan1_alarm Fan warning
fan1_fault Fan fault
in1_label "vin"
in1_input Measured input voltage
in1_max Maximum input voltage
in1_max_alarm Input voltage high alarm
in1_min Minimum input voltage
in1_min_alarm Input voltage low alarm
in2_label "vout1"
in2_input Measured output voltage
in2_max Maximum output voltage
in2_max_alarm Output voltage high alarm
in2_min Maximum output voltage
in2_min_alarm Output voltage low alarm
power1_label "pin"
power1_input Measured input power
power1_alarm Input power alarm
power1_max Maximum input power
power2_label "pout1"
power2_input Measured output power
power2_max Maximum output power
power2_max_alarm Output power high alarm
temp1_input Measured temperature around input connector
temp1_alarm Temperature alarm
temp2_input Measured temperature around output connector
temp2_alarm Temperature alarm
======================= ============================================

1
Documentation/hwmon/index.rst
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@ -45,6 +45,7 @@ Hardware Monitoring Kernel Drivers
aspeed-pwm-tacho
bcm54140
bel-pfe
bpa-rs600
bt1-pvt
coretemp
corsair-cpro

9
drivers/hwmon/pmbus/Kconfig
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@ -56,6 +56,15 @@ config SENSORS_BEL_PFE
This driver can also be built as a module. If so, the module will
be called bel-pfe.
config SENSORS_BPA_RS600
tristate "BluTek BPA-RS600 Power Supplies"
help
If you say yes here you get hardware monitoring support for BluTek
BPA-RS600 Power Supplies.
This driver can also be built as a module. If so, the module will
be called bpa-rs600.
config SENSORS_IBM_CFFPS
tristate "IBM Common Form Factor Power Supply"
depends on LEDS_CLASS

1
drivers/hwmon/pmbus/Makefile
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@ -8,6 +8,7 @@ obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
obj-$(CONFIG_SENSORS_ADM1266) += adm1266.o
obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o
obj-$(CONFIG_SENSORS_BPA_RS600) += bpa-rs600.o
obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o
obj-$(CONFIG_SENSORS_IR35221) += ir35221.o

172
drivers/hwmon/pmbus/bpa-rs600.c Normal file
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@ -0,0 +1,172 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Hardware monitoring driver for BluTek BPA-RS600 Power Supplies
*
* Copyright 2021 Allied Telesis Labs
*/
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pmbus.h>
#include "pmbus.h"
#define BPARS600_MFR_VIN_MIN 0xa0
#define BPARS600_MFR_VIN_MAX 0xa1
#define BPARS600_MFR_IIN_MAX 0xa2
#define BPARS600_MFR_PIN_MAX 0xa3
#define BPARS600_MFR_VOUT_MIN 0xa4
#define BPARS600_MFR_VOUT_MAX 0xa5
#define BPARS600_MFR_IOUT_MAX 0xa6
#define BPARS600_MFR_POUT_MAX 0xa7
static int bpa_rs600_read_byte_data(struct i2c_client *client, int page, int reg)
{
int ret;
if (page > 0)
return -ENXIO;
switch (reg) {
case PMBUS_FAN_CONFIG_12:
/*
* Two fans are reported in PMBUS_FAN_CONFIG_12 but there is
* only one fan in the module. Mask out the FAN2 bits.
*/
ret = pmbus_read_byte_data(client, 0, PMBUS_FAN_CONFIG_12);
if (ret >= 0)
ret &= ~(PB_FAN_2_INSTALLED | PB_FAN_2_PULSE_MASK);
break;
default:
ret = -ENODATA;
break;
}
return ret;
}
static int bpa_rs600_read_word_data(struct i2c_client *client, int page, int phase, int reg)
{
int ret;
if (page > 0)
return -ENXIO;
switch (reg) {
case PMBUS_VIN_UV_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VIN_MIN);
break;
case PMBUS_VIN_OV_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VIN_MAX);
break;
case PMBUS_VOUT_UV_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VOUT_MIN);
break;
case PMBUS_VOUT_OV_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VOUT_MAX);
break;
case PMBUS_IIN_OC_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_IIN_MAX);
break;
case PMBUS_IOUT_OC_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_IOUT_MAX);
break;
case PMBUS_PIN_OP_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_PIN_MAX);
break;
case PMBUS_POUT_OP_WARN_LIMIT:
ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_POUT_MAX);
break;
case PMBUS_VIN_UV_FAULT_LIMIT:
case PMBUS_VIN_OV_FAULT_LIMIT:
case PMBUS_VOUT_UV_FAULT_LIMIT:
case PMBUS_VOUT_OV_FAULT_LIMIT:
/* These commands return data but it is invalid/un-documented */
ret = -ENXIO;
break;
default:
if (reg >= PMBUS_VIRT_BASE)
ret = -ENXIO;
else
ret = -ENODATA;
break;
}
return ret;
}
static struct pmbus_driver_info bpa_rs600_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_TEMPERATURE] = linear,
.format[PSC_FAN] = linear,
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT |
PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT |
PMBUS_HAVE_PIN | PMBUS_HAVE_POUT |
PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
PMBUS_HAVE_FAN12 |
PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT |
PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP |
PMBUS_HAVE_STATUS_FAN12,
.read_byte_data = bpa_rs600_read_byte_data,
.read_word_data = bpa_rs600_read_word_data,
};
static int bpa_rs600_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
u8 buf[I2C_SMBUS_BLOCK_MAX + 1];
int ret;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_BYTE_DATA
| I2C_FUNC_SMBUS_READ_WORD_DATA
| I2C_FUNC_SMBUS_READ_BLOCK_DATA))
return -ENODEV;
ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
if (ret < 0) {
dev_err(dev, "Failed to read Manufacturer Model\n");
return ret;
}
if (strncmp(buf, "BPA-RS600", 8)) {
buf[ret] = '\0';
dev_err(dev, "Unsupported Manufacturer Model '%s'\n", buf);
return -ENODEV;
}
return pmbus_do_probe(client, &bpa_rs600_info);
}
static const struct i2c_device_id bpa_rs600_id[] = {
{ "bpars600", 0 },
{},
};
MODULE_DEVICE_TABLE(i2c, bpa_rs600_id);
static const struct of_device_id __maybe_unused bpa_rs600_of_match[] = {
{ .compatible = "blutek,bpa-rs600" },
{},
};
MODULE_DEVICE_TABLE(of, bpa_rs600_of_match);
static struct i2c_driver bpa_rs600_driver = {
.driver = {
.name = "bpa-rs600",
.of_match_table = of_match_ptr(bpa_rs600_of_match),
},
.probe_new = bpa_rs600_probe,
.id_table = bpa_rs600_id,
};
module_i2c_driver(bpa_rs600_driver);
MODULE_AUTHOR("Chris Packham");
MODULE_DESCRIPTION("PMBus driver for BluTek BPA-RS600");
MODULE_LICENSE("GPL");