hwmon:(pmbus/xdpe1a2g7b) Add support for xdpe1a2g5b/7b controllers (34b66c7e) · Commits · git / linux-net

drivers/hwmon/pmbus/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -711,6 +711,15 @@ config SENSORS_XDPE152
		This driver can also be built as a module. If so, the module will
		be called xdpe152c4.

		config SENSORS_XDPE1A2G7B
		tristate "Infineon XDPE1A2G7B"
		help
		If you say yes here you get hardware monitoring support for Infineon
		XDPE1A2G5B and XDPE1A2G7B.

		This driver can also be built as a module. If so, the module will
		be called xdpe1a2g7b.

		config SENSORS_XDPE122
		tristate "Infineon XDPE122 family"
		help

drivers/hwmon/pmbus/Makefile

+1 −0

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		@@ -70,6 +70,7 @@ obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
		obj-$(CONFIG_SENSORS_XDP710) += xdp710.o
		obj-$(CONFIG_SENSORS_XDPE122) += xdpe12284.o
		obj-$(CONFIG_SENSORS_XDPE152) += xdpe152c4.o
		obj-$(CONFIG_SENSORS_XDPE1A2G7B) += xdpe1a2g7b.o
		obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o
		obj-$(CONFIG_SENSORS_PIM4328) += pim4328.o
		obj-$(CONFIG_SENSORS_CRPS) += crps.o

drivers/hwmon/pmbus/xdpe1a2g7b.c

0 → 100644

+119 −0

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		// SPDX-License-Identifier: GPL-2.0+
		/*
		* Hardware monitoring driver for Infineon Multi-phase Digital XDPE1A2G5B
		* and XDPE1A2G7B Controllers
		*
		* Copyright (c) 2026 Infineon Technologies. All rights reserved.
		*/

		#include <linux/err.h>
		#include <linux/i2c.h>
		#include <linux/init.h>
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include "pmbus.h"

		#define XDPE1A2G7B_PAGE_NUM 2
		#define XDPE1A2G7B_NVIDIA_195MV 0x1E /* NVIDIA mode 1.95mV, VID step is 5mV */

		static int xdpe1a2g7b_identify(struct i2c_client *client,
		struct pmbus_driver_info *info)
		{
		u8 vout_params;
		int vout_mode;

		/*
		* XDPE1A2G5B and XDPE1A2G7B support both Linear and NVIDIA PWM VID data
		* formats via VOUT_MODE. Note that the device pages/loops are not fully
		* independent: configuration is shared, so programming each page/loop
		* separately is not supported.
		*/
		vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
		if (vout_mode < 0)
		return vout_mode;

		switch (vout_mode >> 5) {
		case 0:
		info->format[PSC_VOLTAGE_OUT] = linear;
		return 0;
		case 1:
		info->format[PSC_VOLTAGE_OUT] = vid;
		vout_params = vout_mode & GENMASK(4, 0);
		/* Check for VID Code Type */
		switch (vout_params) {
		case XDPE1A2G7B_NVIDIA_195MV:
		/* VID vrm_version for PAGE0 and PAGE1 */
		info->vrm_version[0] = nvidia195mv;
		info->vrm_version[1] = nvidia195mv;
		break;
		default:
		return -EINVAL;
		}
		break;
		default:
		return -ENODEV;
		}

		return 0;
		}

		static struct pmbus_driver_info xdpe1a2g7b_info = {
		.pages = XDPE1A2G7B_PAGE_NUM,
		.identify = xdpe1a2g7b_identify,
		.format[PSC_VOLTAGE_IN] = linear,
		.format[PSC_TEMPERATURE] = linear,
		.format[PSC_CURRENT_IN] = linear,
		.format[PSC_CURRENT_OUT] = linear,
		.format[PSC_POWER] = linear,
		.func[0] = PMBUS_HAVE_VIN \| PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT \|
		PMBUS_HAVE_IIN \| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT \|
		PMBUS_HAVE_TEMP \| PMBUS_HAVE_TEMP2 \| PMBUS_HAVE_STATUS_TEMP \|
		PMBUS_HAVE_POUT \| PMBUS_HAVE_PIN \| PMBUS_HAVE_STATUS_INPUT,
		.func[1] = PMBUS_HAVE_VIN \| PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT \|
		PMBUS_HAVE_IIN \| PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT \|
		PMBUS_HAVE_PIN \| PMBUS_HAVE_POUT \| PMBUS_HAVE_STATUS_INPUT,
		};

		static int xdpe1a2g7b_probe(struct i2c_client *client)
		{
		struct pmbus_driver_info *info;

		info = devm_kmemdup(&client->dev, &xdpe1a2g7b_info, sizeof(*info),
		GFP_KERNEL);
		if (!info)
		return -ENOMEM;

		return pmbus_do_probe(client, info);
		}

		static const struct i2c_device_id xdpe1a2g7b_id[] = {
		{ "xdpe1a2g5b" },
		{ "xdpe1a2g7b" },
		{}
		};

		MODULE_DEVICE_TABLE(i2c, xdpe1a2g7b_id);

		static const struct of_device_id __maybe_unused xdpe1a2g7b_of_match[] = {
		{ .compatible = "infineon,xdpe1a2g5b" },
		{ .compatible = "infineon,xdpe1a2g7b" },
		{}
		};

		MODULE_DEVICE_TABLE(of, xdpe1a2g7b_of_match);

		static struct i2c_driver xdpe1a2g7b_driver = {
		.driver = {
		.name = "xdpe1a2g7b",
		.of_match_table = of_match_ptr(xdpe1a2g7b_of_match),
		},
		.probe = xdpe1a2g7b_probe,
		.id_table = xdpe1a2g7b_id,
		};

		module_i2c_driver(xdpe1a2g7b_driver);

		MODULE_AUTHOR("Ashish Yadav <ashish.yadav@infineon.com>");
		MODULE_DESCRIPTION("PMBus driver for Infineon XDPE1A2G5B/7B");
		MODULE_LICENSE("GPL");
		MODULE_IMPORT_NS("PMBUS");