Add support for mp5023 device from Monolithic Power Systems, Inc. (MPS) vendor. This is a Hot-Swap Controller. Signed-off-by: Howard Chiu <howard.chiu@xxxxxxxxxxxx> --- Change since v1: - mp5023.c - Sort headers - mp5023.rst - Add datasheet information - Correct sentences Documentation/hwmon/mp5023.rst | 84 ++++++++++++++++++++++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 ++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/mp5023.c | 66 ++++++++++++++++++++++++++ 4 files changed, 160 insertions(+) create mode 100644 Documentation/hwmon/mp5023.rst create mode 100644 drivers/hwmon/pmbus/mp5023.c diff --git a/Documentation/hwmon/mp5023.rst b/Documentation/hwmon/mp5023.rst new file mode 100644 index 000000000000..af5ab1345a91 --- /dev/null +++ b/Documentation/hwmon/mp5023.rst @@ -0,0 +1,84 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel driver mp5023 +==================== + +Supported chips: + + * MPS MP5023 + + Prefix: 'mp5023' + + * Datasheet + + Publicly available at the MPS website : https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.monolithicpower.com%2Fen%2Fmp5023.html&data=04%7C01%7Choward.chiu%40quantatw.com%7Ce7d84277130c406cc20c08d9bac3d86d%7C179b032707fc4973ac738de7313561b2%7C1%7C0%7C637746172579501975%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=8Wo4sLU8ZlZkWBnzcQRbKnW%2BvzL1mn8jR3K%2BCj2fDQs%3D&reserved=0 + +Author: + + Howard Chiu <howard.chiu@xxxxxxxxxxxx> + +Description +----------- + +This driver implements support for Monolithic Power Systems, Inc. (MPS) +MP5023 Hot-Swap Controller. + +Device complaint with: + +- PMBus rev 1.3 interface. + +Device supports direct format for reading input voltage, output voltage, +output current, input power and temperature. + +The driver exports the following attributes via the 'sysfs' files +for input voltage: + +**in1_input** + +**in1_label** + +**in1_max** + +**in1_max_alarm** + +**in1_min** + +**in1_min_alarm** + +The driver provides the following attributes for output voltage: + +**in2_input** + +**in2_label** + +**in2_alarm** + +The driver provides the following attributes for output current: + +**curr1_input** + +**curr1_label** + +**curr1_alarm** + +**curr1_max** + +The driver provides the following attributes for input power: + +**power1_input** + +**power1_label** + +**power1_alarm** + +The driver provides the following attributes for temperature: + +**temp1_input** + +**temp1_max** + +**temp1_max_alarm** + +**temp1_crit** + +**temp1_crit_alarm** diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index ffb609cee3a4..b56bd8542864 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -276,6 +276,15 @@ config SENSORS_MP2975 This driver can also be built as a module. If so, the module will be called mp2975. +config SENSORS_MP5023 + tristate "MPS MP5023" + help + If you say yes here you get hardware monitoring support for MPS + MP5023. + + This driver can also be built as a module. If so, the module will + be called mp5023. + config SENSORS_PIM4328 tristate "Flex PIM4328 and compatibles" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 0ed4d596a948..61cdc24b1309 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_SENSORS_MAX34440) += max34440.o obj-$(CONFIG_SENSORS_MAX8688) += max8688.o obj-$(CONFIG_SENSORS_MP2888) += mp2888.o obj-$(CONFIG_SENSORS_MP2975) += mp2975.o +obj-$(CONFIG_SENSORS_MP5023) += mp5023.o obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o obj-$(CONFIG_SENSORS_Q54SJ108A2) += q54sj108a2.o diff --git a/drivers/hwmon/pmbus/mp5023.c b/drivers/hwmon/pmbus/mp5023.c new file mode 100644 index 000000000000..14d3934aa099 --- /dev/null +++ b/drivers/hwmon/pmbus/mp5023.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for MPS MP5023 Hot-Swap Controller + */ + +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include "pmbus.h" + +static struct pmbus_driver_info mp5023_info = { + .pages = 1, + + .format[PSC_VOLTAGE_IN] = direct, + .format[PSC_VOLTAGE_OUT] = direct, + .format[PSC_CURRENT_OUT] = direct, + .format[PSC_POWER] = direct, + .format[PSC_TEMPERATURE] = direct, + + .m[PSC_VOLTAGE_IN] = 32, + .b[PSC_VOLTAGE_IN] = 0, + .R[PSC_VOLTAGE_IN] = 0, + .m[PSC_VOLTAGE_OUT] = 32, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = 0, + .m[PSC_CURRENT_OUT] = 16, + .b[PSC_CURRENT_OUT] = 0, + .R[PSC_CURRENT_OUT] = 0, + .m[PSC_POWER] = 1, + .b[PSC_POWER] = 0, + .R[PSC_POWER] = 0, + .m[PSC_TEMPERATURE] = 2, + .b[PSC_TEMPERATURE] = 0, + .R[PSC_TEMPERATURE] = 0, + + .func[0] = + PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN | + PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT | + PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP, +}; + +static int mp5023_probe(struct i2c_client *client) +{ + return pmbus_do_probe(client, &mp5023_info); +} + +static const struct of_device_id __maybe_unused mp5023_of_match[] = { + { .compatible = "mps,mp5023", }, + {} +}; + +MODULE_DEVICE_TABLE(of, mp5023_of_match); + +static struct i2c_driver mp5023_driver = { + .driver = { + .name = "mp5023", + .of_match_table = of_match_ptr(mp5023_of_match), + }, + .probe_new = mp5023_probe, +}; + +module_i2c_driver(mp5023_driver); + +MODULE_AUTHOR("Howard Chiu <howard.chiu@xxxxxxxxxxxx>"); +MODULE_DESCRIPTION("PMBus driver for MPS MP5023 HSC"); +MODULE_LICENSE("GPL"); -- 2.25.1
