Commit 08ebc9de authored by Thomas Richard's avatar Thomas Richard Committed by Guenter Roeck
Browse files

hwmon: Add Congatec Board Controller monitoring driver 



Add support for the Congatec Board Controller. This controller exposes
temperature, voltage, current and fan sensors.

The available sensors list cannot be predicted. Some sensors can be
present or not, depending the system.
The driver has an internal list of all possible sensors, for all Congatec
boards. The Board Controller gives to the driver its sensors list, and
their status (active or not).

Signed-off-by: default avatarThomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250203-congatec-board-controller-hwmon-v4-1-ff6c76a4662c@bootlin.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent c1d6afdb

Documentation/hwmon/cgbc-hwmon.rst

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.. SPDX-License-Identifier: GPL-2.0-or-later



Kernel driver cgbc-hwmon

========================



Supported chips:



 * Congatec Board Controller.



   Prefix: 'cgbc-hwmon'



Author: Thomas Richard <thomas.richard@bootlin.com>



Description

-----------



This driver enables monitoring support for the Congatec Board Controller.

This controller is embedded on the x86 SoMs of Congatec.



Sysfs entries

-------------



The following sysfs entries list contains all sensors defined in the Board

Controller. The available sensors in sysfs depend on the SoM and the

system.



============= ======================

Name          Description

============= ======================

temp1_input   CPU temperature

temp2_input   Box temperature

temp3_input   Ambient temperature

temp4_input   Board temperature

temp5_input   Carrier temperature

temp6_input   Chipset temperature

temp7_input   Video temperature

temp8_input   Other temperature

temp9_input   TOPDIM temperature

temp10_input  BOTTOMDIM temperature

in0_input     CPU voltage

in1_input     DC Runtime voltage

in2_input     DC Standby voltage

in3_input     CMOS Battery voltage

in4_input     Battery voltage

in5_input     AC voltage

in6_input     Other voltage

in7_input     5V voltage

in8_input     5V Standby voltage

in9_input     3V3 voltage

in10_input    3V3 Standby voltage

in11_input    VCore A voltage

in12_input    VCore B voltage

in13_input    12V voltage

curr1_input   DC current

curr2_input   5V current

curr3_input   12V current

fan1_input    CPU fan

fan2_input    Box fan

fan3_input    Ambient fan

fan4_input    Chiptset fan

fan5_input    Video fan

fan6_input    Other fan

============= ======================

Documentation/hwmon/index.rst

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@@ -53,6 +53,7 @@ Hardware Monitoring Kernel Drivers 
   bel-pfe

   bpa-rs600

   bt1-pvt

   cgbc-hwmon

   chipcap2

   coretemp

   corsair-cpro

MAINTAINERS

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@@ -5874,6 +5874,7 @@ CONGATEC BOARD CONTROLLER MFD DRIVER 
M:	Thomas Richard <thomas.richard@bootlin.com>

S:	Maintained

F:	drivers/gpio/gpio-cgbc.c

F:	drivers/hwmon/cgbc-hwmon.c

F:	drivers/i2c/busses/i2c-cgbc.c

F:	drivers/mfd/cgbc-core.c

F:	drivers/watchdog/cgbc_wdt.c

drivers/hwmon/Kconfig

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@@ -463,6 +463,16 @@ config SENSORS_BT1_PVT_ALARMS 
	  the data conversion will be periodically performed and the data will be

	  saved in the internal driver cache.



config SENSORS_CGBC

	tristate "Congatec Board Controller Sensors"

	depends on MFD_CGBC

	help

	  Enable sensors support for the Congatec Board Controller. It has

	  temperature, voltage, current and fan sensors.



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

	  called cgbc-hwmon.



config SENSORS_CHIPCAP2

	tristate "Amphenol ChipCap 2 relative humidity and temperature sensor"

	depends on I2C

drivers/hwmon/Makefile

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@@ -59,6 +59,7 @@ obj-$(CONFIG_SENSORS_ASUS_ROG_RYUJIN) += asus_rog_ryujin.o 
obj-$(CONFIG_SENSORS_ATXP1)	+= atxp1.o

obj-$(CONFIG_SENSORS_AXI_FAN_CONTROL) += axi-fan-control.o

obj-$(CONFIG_SENSORS_BT1_PVT)	+= bt1-pvt.o

obj-$(CONFIG_SENSORS_CGBC)	+= cgbc-hwmon.o

obj-$(CONFIG_SENSORS_CHIPCAP2) += chipcap2.o

obj-$(CONFIG_SENSORS_CORETEMP)	+= coretemp.o

obj-$(CONFIG_SENSORS_CORSAIR_CPRO) += corsair-cpro.o