hwmon: (pmbus) Add driver for BluTek BPA-RS600
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
Guenter Roeck
parent
90e85e6309
commit
15b2703e5e
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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver bpa-rs600
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=======================
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Supported chips:
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* BPA-RS600-120
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Datasheet: Publicly available at the BluTek website
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http://blutekpower.com/wp-content/uploads/2019/01/BPA-RS600-120-07-19-2018.pdf
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Authors:
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- Chris Packham <chris.packham@alliedtelesis.co.nz>
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Description
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-----------
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The BPA-RS600 is a compact 600W removable power supply module.
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Usage Notes
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-----------
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This driver does not probe for PMBus devices. You will have to instantiate
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devices explicitly.
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Sysfs attributes
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----------------
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======================= ============================================
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curr1_label "iin"
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curr1_input Measured input current
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curr1_max Maximum input current
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curr1_max_alarm Input current high alarm
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curr2_label "iout1"
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curr2_input Measured output current
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curr2_max Maximum output current
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curr2_max_alarm Output current high alarm
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fan1_input Measured fan speed
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fan1_alarm Fan warning
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fan1_fault Fan fault
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in1_label "vin"
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in1_input Measured input voltage
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in1_max Maximum input voltage
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in1_max_alarm Input voltage high alarm
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in1_min Minimum input voltage
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in1_min_alarm Input voltage low alarm
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in2_label "vout1"
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in2_input Measured output voltage
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in2_max Maximum output voltage
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in2_max_alarm Output voltage high alarm
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in2_min Maximum output voltage
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in2_min_alarm Output voltage low alarm
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power1_label "pin"
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power1_input Measured input power
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power1_alarm Input power alarm
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power1_max Maximum input power
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power2_label "pout1"
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power2_input Measured output power
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power2_max Maximum output power
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power2_max_alarm Output power high alarm
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temp1_input Measured temperature around input connector
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temp1_alarm Temperature alarm
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temp2_input Measured temperature around output connector
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temp2_alarm Temperature alarm
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======================= ============================================
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@ -45,6 +45,7 @@ Hardware Monitoring Kernel Drivers
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aspeed-pwm-tacho
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bcm54140
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bel-pfe
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bpa-rs600
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bt1-pvt
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coretemp
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corsair-cpro
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@ -56,6 +56,15 @@ config SENSORS_BEL_PFE
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This driver can also be built as a module. If so, the module will
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be called bel-pfe.
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config SENSORS_BPA_RS600
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tristate "BluTek BPA-RS600 Power Supplies"
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help
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If you say yes here you get hardware monitoring support for BluTek
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BPA-RS600 Power Supplies.
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This driver can also be built as a module. If so, the module will
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be called bpa-rs600.
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config SENSORS_IBM_CFFPS
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tristate "IBM Common Form Factor Power Supply"
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depends on LEDS_CLASS
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@ -8,6 +8,7 @@ obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
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obj-$(CONFIG_SENSORS_ADM1266) += adm1266.o
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obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
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obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o
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obj-$(CONFIG_SENSORS_BPA_RS600) += bpa-rs600.o
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obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
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obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o
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obj-$(CONFIG_SENSORS_IR35221) += ir35221.o
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@ -0,0 +1,172 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Hardware monitoring driver for BluTek BPA-RS600 Power Supplies
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*
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* Copyright 2021 Allied Telesis Labs
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*/
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pmbus.h>
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#include "pmbus.h"
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#define BPARS600_MFR_VIN_MIN 0xa0
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#define BPARS600_MFR_VIN_MAX 0xa1
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#define BPARS600_MFR_IIN_MAX 0xa2
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#define BPARS600_MFR_PIN_MAX 0xa3
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#define BPARS600_MFR_VOUT_MIN 0xa4
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#define BPARS600_MFR_VOUT_MAX 0xa5
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#define BPARS600_MFR_IOUT_MAX 0xa6
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#define BPARS600_MFR_POUT_MAX 0xa7
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static int bpa_rs600_read_byte_data(struct i2c_client *client, int page, int reg)
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{
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int ret;
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if (page > 0)
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return -ENXIO;
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switch (reg) {
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case PMBUS_FAN_CONFIG_12:
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/*
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* Two fans are reported in PMBUS_FAN_CONFIG_12 but there is
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* only one fan in the module. Mask out the FAN2 bits.
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*/
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ret = pmbus_read_byte_data(client, 0, PMBUS_FAN_CONFIG_12);
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if (ret >= 0)
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ret &= ~(PB_FAN_2_INSTALLED | PB_FAN_2_PULSE_MASK);
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break;
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default:
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ret = -ENODATA;
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break;
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}
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return ret;
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}
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static int bpa_rs600_read_word_data(struct i2c_client *client, int page, int phase, int reg)
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{
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int ret;
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if (page > 0)
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return -ENXIO;
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switch (reg) {
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case PMBUS_VIN_UV_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VIN_MIN);
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break;
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case PMBUS_VIN_OV_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VIN_MAX);
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break;
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case PMBUS_VOUT_UV_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VOUT_MIN);
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break;
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case PMBUS_VOUT_OV_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_VOUT_MAX);
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break;
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case PMBUS_IIN_OC_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_IIN_MAX);
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break;
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case PMBUS_IOUT_OC_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_IOUT_MAX);
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break;
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case PMBUS_PIN_OP_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_PIN_MAX);
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break;
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case PMBUS_POUT_OP_WARN_LIMIT:
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ret = pmbus_read_word_data(client, 0, 0xff, BPARS600_MFR_POUT_MAX);
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break;
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case PMBUS_VIN_UV_FAULT_LIMIT:
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case PMBUS_VIN_OV_FAULT_LIMIT:
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case PMBUS_VOUT_UV_FAULT_LIMIT:
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case PMBUS_VOUT_OV_FAULT_LIMIT:
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/* These commands return data but it is invalid/un-documented */
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ret = -ENXIO;
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break;
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default:
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if (reg >= PMBUS_VIRT_BASE)
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ret = -ENXIO;
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else
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ret = -ENODATA;
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break;
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}
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return ret;
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}
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static struct pmbus_driver_info bpa_rs600_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_FAN] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT |
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PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT |
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PMBUS_HAVE_PIN | PMBUS_HAVE_POUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
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PMBUS_HAVE_FAN12 |
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PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP |
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PMBUS_HAVE_STATUS_FAN12,
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.read_byte_data = bpa_rs600_read_byte_data,
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.read_word_data = bpa_rs600_read_word_data,
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};
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static int bpa_rs600_probe(struct i2c_client *client)
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{
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struct device *dev = &client->dev;
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u8 buf[I2C_SMBUS_BLOCK_MAX + 1];
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int ret;
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_READ_BYTE_DATA
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| I2C_FUNC_SMBUS_READ_WORD_DATA
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| I2C_FUNC_SMBUS_READ_BLOCK_DATA))
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return -ENODEV;
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ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
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if (ret < 0) {
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dev_err(dev, "Failed to read Manufacturer Model\n");
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return ret;
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}
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if (strncmp(buf, "BPA-RS600", 8)) {
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buf[ret] = '\0';
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dev_err(dev, "Unsupported Manufacturer Model '%s'\n", buf);
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return -ENODEV;
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}
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return pmbus_do_probe(client, &bpa_rs600_info);
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}
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static const struct i2c_device_id bpa_rs600_id[] = {
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{ "bpars600", 0 },
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{},
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};
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MODULE_DEVICE_TABLE(i2c, bpa_rs600_id);
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static const struct of_device_id __maybe_unused bpa_rs600_of_match[] = {
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{ .compatible = "blutek,bpa-rs600" },
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{},
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};
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MODULE_DEVICE_TABLE(of, bpa_rs600_of_match);
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static struct i2c_driver bpa_rs600_driver = {
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.driver = {
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.name = "bpa-rs600",
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.of_match_table = of_match_ptr(bpa_rs600_of_match),
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},
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.probe_new = bpa_rs600_probe,
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.id_table = bpa_rs600_id,
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};
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module_i2c_driver(bpa_rs600_driver);
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MODULE_AUTHOR("Chris Packham");
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MODULE_DESCRIPTION("PMBus driver for BluTek BPA-RS600");
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MODULE_LICENSE("GPL");
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