hwmon: add MP2869,MP29608,MP29612 and MP29816 series driver

Add support for MPS VR mp2869/mp2869a,mp29608/mp29608a,mp29612/mp29612a
and mp29816/mp29816a/mp29816b/mp29816c controller. This driver exposes
telemetry and limit value readings and writtings.

Signed-off-by: Wensheng Wang <wenswang@yeah.net>
Link: https://lore.kernel.org/r/20250805102020.749850-2-wenswang@yeah.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/hwmon/index.rst

@@ -173,6 +173,7 @@ Hardware Monitoring Kernel Drivers
    menf21bmc
    mlxreg-fan
    mp2856
+   mp2869
    mp2888
    mp2891
    mp2975

Documentation/hwmon/mp2869.rst

@@ -0,0 +1,175 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver mp2869
+====================
+
+Supported chips:
+
+  * MPS mp2869
+
+    Prefix: 'mp2869'
+
+  * MPS mp29608
+
+    Prefix: 'mp29608'
+
+  * MPS mp29612
+
+    Prefix: 'mp29612'
+
+  * MPS mp29816
+
+    Prefix: 'mp29816'
+
+Author:
+
+	Wensheng Wang <wenswang@yeah.net>
+
+Description
+-----------
+
+This driver implements support for Monolithic Power Systems, Inc. (MPS)
+MP2869 Dual Loop Digital Multi-phase Controller.
+
+Device compliant with:
+
+- PMBus rev 1.3 interface.
+
+The driver exports the following attributes via the 'sysfs' files
+for input voltage:
+
+**in1_input**
+
+**in1_label**
+
+**in1_crit**
+
+**in1_crit_alarm**
+
+**in1_lcrit**
+
+**in1_lcrit_alarm**
+
+**in1_min**
+
+**in1_min_alarm**
+
+The driver provides the following attributes for output voltage:
+
+**in2_input**
+
+**in2_label**
+
+**in2_crit**
+
+**in2_crit_alarm**
+
+**in2_lcrit**
+
+**in2_lcrit_alarm**
+
+**in3_input**
+
+**in3_label**
+
+**in3_crit**
+
+**in3_crit_alarm**
+
+**in3_lcrit**
+
+**in3_lcrit_alarm**
+
+The driver provides the following attributes for input current:
+
+**curr1_input**
+
+**curr1_label**
+
+**curr2_input**
+
+**curr2_label**
+
+The driver provides the following attributes for output current:
+
+**curr3_input**
+
+**curr3_label**
+
+**curr3_crit**
+
+**curr3_crit_alarm**
+
+**curr3_max**
+
+**curr3_max_alarm**
+
+**curr4_input**
+
+**curr4_label**
+
+**curr4_crit**
+
+**curr4_crit_alarm**
+
+**curr4_max**
+
+**curr4_max_alarm**
+
+The driver provides the following attributes for input power:
+
+**power1_input**
+
+**power1_label**
+
+**power2_input**
+
+**power2_label**
+
+The driver provides the following attributes for output power:
+
+**power3_input**
+
+**power3_label**
+
+**power3_input**
+
+**power3_label**
+
+**power3_max**
+
+**power3_max_alarm**
+
+**power4_input**
+
+**power4_label**
+
+**power4_input**
+
+**power4_label**
+
+**power4_max**
+
+**power4_max_alarm**
+
+The driver provides the following attributes for temperature:
+
+**temp1_input**
+
+**temp1_crit**
+
+**temp1_crit_alarm**
+
+**temp1_max**
+
+**temp1_max_alarm**
+
+**temp2_input**
+
+**temp2_crit**
+
+**temp2_crit_alarm**
+
+**temp2_max**
+
+**temp2_max_alarm**

MAINTAINERS

@@ -17175,6 +17175,13 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/leds/backlight/mps,mp3309c.yaml
 F:	drivers/video/backlight/mp3309c.c
 
+MPS MP2869 DRIVER
+M:	Wensheng Wang <wenswang@yeah.net>
+L:	linux-hwmon@vger.kernel.org
+S:	Maintained
+F:	Documentation/hwmon/mp2869.rst
+F:	drivers/hwmon/pmbus/mp2869.c
+
 MPS MP2891 DRIVER
 M:	Noah Wang <noahwang.wang@outlook.com>
 L:	linux-hwmon@vger.kernel.org

drivers/hwmon/pmbus/Kconfig

@@ -374,6 +374,15 @@ config SENSORS_MP2856
 	  This driver can also be built as a module. If so, the module will
 	  be called mp2856.
 
+config SENSORS_MP2869
+	tristate "MPS MP2869"
+	help
+	  If you say yes here you get hardware monitoring support for MPS
+	  MP2869 Dual Loop Digital Multi-Phase Controller.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called mp2869.
+
 config SENSORS_MP2888
 	tristate "MPS MP2888"
 	help

drivers/hwmon/pmbus/Makefile

@@ -37,6 +37,7 @@ obj-$(CONFIG_SENSORS_MAX31785)	+= max31785.o
 obj-$(CONFIG_SENSORS_MAX34440)	+= max34440.o
 obj-$(CONFIG_SENSORS_MAX8688)	+= max8688.o
 obj-$(CONFIG_SENSORS_MP2856)	+= mp2856.o
+obj-$(CONFIG_SENSORS_MP2869)	+= mp2869.o
 obj-$(CONFIG_SENSORS_MP2888)	+= mp2888.o
 obj-$(CONFIG_SENSORS_MP2891)	+= mp2891.o
 obj-$(CONFIG_SENSORS_MP2975)	+= mp2975.o