hwmon: (pmbus) Add support for pli1209bc
PLI1209BC is a Digital Supervisor from Vicor Corporation. Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io> Link: https://lore.kernel.org/r/4e016e66275bc46c90974aec18b150c874e64787.1645435888.git.sylv@sylv.io Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Marcello Sylvester Bauer
Guenter Roeck
parent
b7b94f15e5
commit
d0cd978513
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@ -161,6 +161,7 @@ Hardware Monitoring Kernel Drivers
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pc87427
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pcf8591
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pim4328
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pli1209bc
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pm6764tr
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pmbus
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powr1220
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@ -0,0 +1,75 @@
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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver pli1209bc
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=======================
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Supported chips:
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* Digital Supervisor PLI1209BC
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Prefix: 'pli1209bc'
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Addresses scanned: 0x50 - 0x5F
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Datasheet: https://www.vicorpower.com/documents/datasheets/ds-PLI1209BCxyzz-VICOR.pdf
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Authors:
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- Marcello Sylvester Bauer <sylv@sylv.io>
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Description
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-----------
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The Vicor PLI1209BC is an isolated digital power system supervisor that provides
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a communication interface between a host processor and one Bus Converter Module
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(BCM). The PLI communicates with a system controller via a PMBus compatible
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interface over an isolated UART interface. Through the PLI, the host processor
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can configure, set protection limits, and monitor the BCM.
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Sysfs entries
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-------------
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======================= ========================================================
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in1_label "vin2"
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in1_input Input voltage.
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in1_rated_min Minimum rated input voltage.
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in1_rated_max Maximum rated 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_crit Critical input voltage.
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in1_crit_alarm Input voltage critical alarm.
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in2_label "vout2"
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in2_input Output voltage.
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in2_rated_min Minimum rated output voltage.
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in2_rated_max Maximum rated output voltage.
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in2_alarm Output voltage alarm
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curr1_label "iin2"
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curr1_input Input current.
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curr1_max Maximum input current.
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curr1_max_alarm Maximum input current high alarm.
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curr1_crit Critical input current.
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curr1_crit_alarm Input current critical alarm.
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curr2_label "iout2"
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curr2_input Output current.
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curr2_crit Critical output current.
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curr2_crit_alarm Output current critical alarm.
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curr2_max Maximum output current.
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curr2_max_alarm Output current high alarm.
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power1_label "pin2"
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power1_input Input power.
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power1_alarm Input power alarm.
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power2_label "pout2"
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power2_input Output power.
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power2_rated_max Maximum rated output power.
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temp1_input Die temperature.
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temp1_alarm Die temperature alarm.
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temp1_max Maximum die temperature.
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temp1_max_alarm Die temperature high alarm.
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temp1_crit Critical die temperature.
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temp1_crit_alarm Die temperature critical alarm.
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======================= ========================================================
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@ -317,6 +317,15 @@ config SENSORS_PIM4328
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This driver can also be built as a module. If so, the module will
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be called pim4328.
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config SENSORS_PLI1209BC
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tristate "Vicor PLI1209BC"
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help
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If you say yes here you get hardware monitoring support for Vicor
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PLI1209BC Digital Supervisor.
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This driver can also be built as a module. If so, the module will
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be called pli1209bc.
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config SENSORS_PM6764TR
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tristate "ST PM6764TR"
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help
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@ -33,6 +33,7 @@ obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
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obj-$(CONFIG_SENSORS_MP2888) += mp2888.o
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obj-$(CONFIG_SENSORS_MP2975) += mp2975.o
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obj-$(CONFIG_SENSORS_MP5023) += mp5023.o
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obj-$(CONFIG_SENSORS_PLI1209BC) += pli1209bc.o
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obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o
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obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o
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obj-$(CONFIG_SENSORS_Q54SJ108A2) += q54sj108a2.o
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@ -0,0 +1,115 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hardware monitoring driver for Vicor PLI1209BC Digital Supervisor
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*
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* Copyright (c) 2022 9elements GmbH
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*/
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#include <linux/i2c.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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/*
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* The capability command is only supported at page 0. Probing the device while
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* the page register is set to 1 will falsely enable PEC support. Disable
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* capability probing accordingly, since the PLI1209BC does not have any
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* additional capabilities.
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*/
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static struct pmbus_platform_data pli1209bc_plat_data = {
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.flags = PMBUS_NO_CAPABILITY,
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};
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static int pli1209bc_read_word_data(struct i2c_client *client, int page,
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int phase, int reg)
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{
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int data;
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switch (reg) {
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/* PMBUS_READ_POUT uses a direct format with R=0 */
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case PMBUS_READ_POUT:
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data = pmbus_read_word_data(client, page, phase, reg);
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if (data < 0)
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return data;
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data = sign_extend32(data, 15) * 10;
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return clamp_val(data, -32768, 32767) & 0xffff;
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default:
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return -ENODATA;
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}
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}
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static struct pmbus_driver_info pli1209bc_info = {
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.pages = 2,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_CURRENT_IN] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.format[PSC_POWER] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.m[PSC_VOLTAGE_IN] = 1,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 1,
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.m[PSC_VOLTAGE_OUT] = 1,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 1,
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.m[PSC_CURRENT_IN] = 1,
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.b[PSC_CURRENT_IN] = 0,
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.R[PSC_CURRENT_IN] = 3,
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.m[PSC_CURRENT_OUT] = 1,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 2,
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.m[PSC_POWER] = 1,
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.b[PSC_POWER] = 0,
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.R[PSC_POWER] = 1,
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.m[PSC_TEMPERATURE] = 1,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 0,
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/*
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* Page 0 sums up all attributes except voltage readings.
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* The pli1209 digital supervisor only contains a single BCM, making
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* page 0 redundant.
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*/
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.func[1] = 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_STATUS_TEMP
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| PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_INPUT,
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.read_word_data = pli1209bc_read_word_data,
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};
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static int pli1209bc_probe(struct i2c_client *client)
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{
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client->dev.platform_data = &pli1209bc_plat_data;
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return pmbus_do_probe(client, &pli1209bc_info);
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}
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static const struct i2c_device_id pli1209bc_id[] = {
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{"pli1209bc", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, pli1209bc_id);
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#ifdef CONFIG_OF
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static const struct of_device_id pli1209bc_of_match[] = {
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{ .compatible = "vicor,pli1209bc" },
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{ },
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};
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MODULE_DEVICE_TABLE(of, pli1209bc_of_match);
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#endif
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static struct i2c_driver pli1209bc_driver = {
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.driver = {
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.name = "pli1209bc",
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.of_match_table = of_match_ptr(pli1209bc_of_match),
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},
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.probe_new = pli1209bc_probe,
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.id_table = pli1209bc_id,
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};
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module_i2c_driver(pli1209bc_driver);
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MODULE_AUTHOR("Marcello Sylvester Bauer <sylv@sylv.io>");
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MODULE_DESCRIPTION("PMBus driver for Vicor PLI1209BC");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);
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