From: Maxim Sloyko <maxims@xxxxxxxxxx> Add the pmbus driver for the Infineon ir38064 voltage regulator. Signed-off-by: Maxim Sloyko <maxims@xxxxxxxxxx> Signed-off-by: Patrick Venture <venture@xxxxxxxxxx> --- Documentation/hwmon/ir38064 | 64 +++++++++++++++++++++++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 +++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/ir38064.c | 60 ++++++++++++++++++++++++++++++++ 4 files changed, 134 insertions(+) create mode 100644 Documentation/hwmon/ir38064 create mode 100644 drivers/hwmon/pmbus/ir38064.c diff --git a/Documentation/hwmon/ir38064 b/Documentation/hwmon/ir38064 new file mode 100644 index 0000000000000..618779a329da0 --- /dev/null +++ b/Documentation/hwmon/ir38064 @@ -0,0 +1,64 @@ +Kernel driver ir38064 +===================== + +Supported chips: + * Infineon IR38064 + Prefix: 'ir38064' + Addresses scanned: - + Datasheet: Publicly available at the Infineon webiste + https://www.infineon.com/dgdl/Infineon-IR38064MTRPBF-DS-v03_07-EN.pdf?fileId=5546d462584d1d4a0158db0d9efb67ca + +Datasheet is not publicly available. + + +Authors: + Maxim Sloyko <maxims@xxxxxxxxxx> + Patrick Venture <venture@xxxxxxxxxx> + +Description +----------- + +IR38064 is a Single-input Voltage, Synchronous Buck Regulator, DC-DC Converter. + +Usage Notes +----------- + +This driver does not probe for PMBus devices. You will have to instantiate +devices explicitly. + +Sysfs attributes +---------------- + +curr1_label "iout1" +curr1_input Measured output current +curr1_crit Critical maximum current +curr1_crit_alarm Current critical high alarm +curr1_max Maximum current +curr1_max_alarm Current high alarm + +in1_label "vin" +in1_input Measured input voltage +in1_crit Critical maximum input voltage +in1_crit_alarm Input voltage critical high alarm +in1_min Minimum input voltage +in1_min_alarm Input voltage low alarm + +in2_label "vout1" +in2_input Measured output voltage +in2_lcrit Critical minimum output voltage +in2_lcrit_alarm Output voltage critical low alarm +in2_crit Critical maximum output voltage +in2_crit_alarm Output voltage critical high alarm +in2_max Maximum output voltage +in2_max_alarm Output voltage high alarm +in2_min Minimum output voltage +in2_min_alarm Output voltage low alarm + +power1_label "pout1" +power1_input Measured output power + +temp1_input Measured temperature +temp1_crit Critical high temperature +temp1_crit_alarm Chip temperature critical high alarm +temp1_max Maximum temperature +temp1_max_alarm Chip temperature high alarm diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 629cb45f8557a..de87abab990e5 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -54,6 +54,15 @@ config SENSORS_IR35221 This driver can also be built as a module. If so, the module will be called ir35521. +config SENSORS_IR38064 + tristate "Infineon IR38064" + help + If you say yes here you get hardware monitoring support for Infineon + IR38064. + + This driver can also be built as a module. If so, the module will + be called ir38064. + config SENSORS_LM25066 tristate "National Semiconductor LM25066 and compatibles" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index ea0e39518c216..7d1fa6b3c8c93 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o obj-$(CONFIG_SENSORS_IR35221) += ir35221.o +obj-$(CONFIG_SENSORS_IR38064) += ir38064.o obj-$(CONFIG_SENSORS_LM25066) += lm25066.o obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o diff --git a/drivers/hwmon/pmbus/ir38064.c b/drivers/hwmon/pmbus/ir38064.c new file mode 100644 index 0000000000000..4b957ebb6fa71 --- /dev/null +++ b/drivers/hwmon/pmbus/ir38064.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Infineon IR38064 + * + * Copyright (c) 2017 Google Inc + * + */ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include "pmbus.h" + +static struct pmbus_driver_info ir38064_info = { + .pages = 1, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = direct, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .m[PSC_VOLTAGE_OUT] = 256, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = 0, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_POUT, +}; + +static int ir38064_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + return pmbus_do_probe(client, id, &ir38064_info); +} + +static const struct i2c_device_id ir38064_id[] = { + {"ir38064", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, ir38064_id); + +/* This is the driver that will be inserted */ +static struct i2c_driver ir38064_driver = { + .driver = { + .name = "ir38064", + }, + .probe = ir38064_probe, + .remove = pmbus_do_remove, + .id_table = ir38064_id, +}; + +module_i2c_driver(ir38064_driver); + +MODULE_AUTHOR("Maxim Sloyko <maxims@xxxxxxxxxx>"); +MODULE_DESCRIPTION("PMBus driver for Infineon IR38064"); +MODULE_LICENSE("GPL"); -- 2.21.0.392.gf8f6787159e-goog
