Merge tag 'hwmon-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New drivers:

   - PMBus driver for MPS Multi-phase mp5023

   - PMBus driver for Delta AHE-50DC fan control module

   - Driver for NZXT RGB&Fan Controller/Smart Device v2

   - Driver for Texas Instruments INA238

   - Driver to support X370 Asus WMI

   - Driver to support B550 Asus WMI

  Other notable changes:

   - Cleanup of ntc_thermistor driver, and added support for Samsung
     1404-001221 NTC

   - Improve detection of LM84, MAX1617, and MAX1617A in adm1021 driver

   - Clean up tmp401 driver, and convert to with_info API

   - Add support for regulators and IR38060, IR38164 IR38263 to ir38064
     PMBus driver

   - Add support for AMD Family 19h Models 10h-1Fh and A0h-AFh to
     k10temp driver

   - Add support for F81966 to f71882fg driver

   - Add support for ONSEMI N34TS04 to jc42 driver

   - Clean up and simplify dell-smm driver

   - Add support for ROG STRIX B550-A/X570-I GAMING to nct6775 driver

  And various other minor improvements and fixes"

* tag 'hwmon-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (49 commits)
  hwmon: (nzxt-smart2) make array detect_fans_report static const
  hwmon: (xgene-hwmon) Add free before exiting xgene_hwmon_probe
  hwmon: (nzxt-smart2) Fix "unused function" warning
  hwmon: (dell-smm) Pack the whole smm_regs struct
  hwmon: (nct6775) Additional check for ChipID before ASUS WMI usage
  hwmon: (mr75203) fix wrong power-up delay value
  hwmon/pmbus: (ir38064) Fix spelling mistake "comaptible" -> "compatible"
  hwmon/pmbus: (ir38064) Expose a regulator
  hwmon/pmbus: (ir38064) Add of_match_table
  hwmon/pmbus: (ir38064) Add support for IR38060, IR38164 IR38263
  hwmon: add driver for NZXT RGB&Fan Controller/Smart Device v2.
  hwmon: (nct6775) add ROG STRIX B550-A/X570-I GAMING
  hwmon: (pmbus) Add support for MPS Multi-phase mp5023
  dt-bindings: add Delta AHE-50DC fan control module
  hwmon: (pmbus) Add Delta AHE-50DC fan control module driver
  hwmon: prefix kernel-doc comments for structs with struct
  hwmon: (ntc_thermistor) Add Samsung 1404-001221 NTC
  hwmon: (ntc_thermistor) Drop OF dependency
  hwmon: (dell-smm) Unify i8k_ioctl() and i8k_ioctl_unlocked()
  hwmon: (dell-smm) Simplify ioctl handler
  ...

Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml

@@ -76,6 +76,7 @@ properties:
       - const: murata,ncp15wl333
       - const: murata,ncp03wf104
       - const: murata,ncp15xh103
+      - const: samsung,1404-001221
       # Deprecated "ntp," compatible strings
       - const: ntc,ncp15wb473
         deprecated: true

Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml

@@ -26,6 +26,7 @@ properties:
       - ti,ina226
       - ti,ina230
       - ti,ina231
+      - ti,ina238
 
   reg:
     maxItems: 1
@@ -35,6 +36,27 @@ properties:
       Shunt resistor value in micro-Ohm.
     $ref: /schemas/types.yaml#/definitions/uint32
 
+  ti,shunt-gain:
+    description: |
+      Programmable gain divisor for the shunt voltage accuracy and range. This
+      property only applies to devices that have configurable PGA/ADCRANGE. The
+      gain value is used configure the gain and to convert the shunt voltage,
+      current and power register values when reading measurements from the
+      device.
+
+      For devices that have a configurable PGA (e.g. INA209, INA219, INA220),
+      the gain value maps directly with the PG bits of the config register.
+
+      For devices that have ADCRANGE configuration (e.g. INA238) a shunt-gain
+      value of 1 maps to ADCRANGE=1 where no gain divisor is applied to the
+      shunt voltage, and a value of 4 maps to ADCRANGE=0 such that a wider
+      voltage range is used.
+
+      The default value is device dependent, and is defined by the reset value
+      of PGA/ADCRANGE in the respective configuration registers.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [1, 2, 4, 8]
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/trivial-devices.yaml

@@ -73,6 +73,8 @@ properties:
           - dallas,ds4510
             # Digital Thermometer and Thermostat
           - dallas,ds75
+            # Delta AHE-50DC Open19 power shelf fan control module
+          - delta,ahe50dc-fan
             # Delta Electronics DPS-650-AB power supply
           - delta,dps650ab
           # Delta Electronics DPS920AB 920W 54V Power Supply
@@ -121,8 +123,14 @@ properties:
           - ibm,cffps2
             # Infineon IR36021 digital POL buck controller
           - infineon,ir36021
+          # Infineon IR38060 Voltage Regulator
+          - infineon,ir38060
             # Infineon IR38064 Voltage Regulator
           - infineon,ir38064
+          # Infineon IR38164 Voltage Regulator
+          - infineon,ir38164
+          # Infineon IR38263 Voltage Regulator
+          - infineon,ir38263
             # Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
           - infineon,slb9635tt
             # Infineon SLB9645 I2C TPM (new protocol, max 400khz)

Documentation/hwmon/asus_wmi_ec_sensors.rst

+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver asus_wmi_ec_sensors
+=================================
+
+Supported boards:
+ * PRIME X570-PRO,
+ * Pro WS X570-ACE,
+ * ROG CROSSHAIR VIII DARK HERO,
+ * ROG CROSSHAIR VIII FORMULA,
+ * ROG CROSSHAIR VIII HERO,
+ * ROG STRIX B550-E GAMING,
+ * ROG STRIX B550-I GAMING,
+ * ROG STRIX X570-E GAMING.
+
+Authors:
+    - Eugene Shalygin <eugene.shalygin@gmail.com>
+
+Description:
+------------
+ASUS mainboards publish hardware monitoring information via Super I/O
+chip and the ACPI embedded controller (EC) registers. Some of the sensors
+are only available via the EC.
+
+ASUS WMI interface provides a method (BREC) to read data from EC registers,
+which is utilized by this driver to publish those sensor readings to the
+HWMON system. The driver is aware of and reads the following sensors:
+
+1. Chipset (PCH) temperature
+2. CPU package temperature
+3. Motherboard temperature
+4. Readings from the T_Sensor header
+5. VRM temperature
+6. CPU_Opt fan RPM
+7. Chipset fan RPM
+8. Readings from the "Water flow meter" header (RPM)
+9. Readings from the "Water In" and "Water Out" temperature headers
+10. CPU current

Documentation/hwmon/asus_wmi_sensors.rst

+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver asus_wmi_sensors
+=================================
+
+Supported boards:
+ * PRIME X399-A,
+ * PRIME X470-PRO,
+ * ROG CROSSHAIR VI EXTREME,
+ * ROG CROSSHAIR VI HERO,
+ * ROG CROSSHAIR VI HERO (WI-FI AC),
+ * ROG CROSSHAIR VII HERO,
+ * ROG CROSSHAIR VII HERO (WI-FI),
+ * ROG STRIX B450-E GAMING,
+ * ROG STRIX B450-F GAMING,
+ * ROG STRIX B450-I GAMING,
+ * ROG STRIX X399-E GAMING,
+ * ROG STRIX X470-F GAMING,
+ * ROG STRIX X470-I GAMING,
+ * ROG ZENITH EXTREME,
+ * ROG ZENITH EXTREME ALPHA.
+
+Authors:
+    - Ed Brindley <kernel@maidavale.org>
+
+Description:
+------------
+ASUS mainboards publish hardware monitoring information via WMI interface.
+
+ASUS WMI interface provides a methods to get list of sensors and values of
+such, which is utilized by this driver to publish those sensor readings to the
+HWMON system.
+
+The driver is aware of and reads the following sensors:
+ * CPU Core Voltage,
+ * CPU SOC Voltage,
+ * DRAM Voltage,
+ * VDDP Voltage,
+ * 1.8V PLL Voltage,
+ * +12V Voltage,
+ * +5V Voltage,
+ * 3VSB Voltage,
+ * VBAT Voltage,
+ * AVCC3 Voltage,
+ * SB 1.05V Voltage,
+ * CPU Core Voltage,
+ * CPU SOC Voltage,
+ * DRAM Voltage,
+ * CPU Fan RPM,
+ * Chassis Fan 1 RPM,
+ * Chassis Fan 2 RPM,
+ * Chassis Fan 3 RPM,
+ * HAMP Fan RPM,
+ * Water Pump RPM,
+ * CPU OPT RPM,
+ * Water Flow RPM,
+ * AIO Pump RPM,
+ * CPU Temperature,
+ * CPU Socket Temperature,
+ * Motherboard Temperature,
+ * Chipset Temperature,
+ * Tsensor 1 Temperature,
+ * CPU VRM Temperature,
+ * Water In,
+ * Water Out,
+ * CPU VRM Output Current.
+
+Known Issues:
+ * The WMI implementation in some of Asus' BIOSes is buggy. This can result in
+   fans stopping, fans getting stuck at max speed, or temperature readouts
+   getting stuck. This is not an issue with the driver, but the BIOS. The Prime
+   X470 Pro seems particularly bad for this. The more frequently the WMI
+   interface is polled the greater the potential for this to happen. Until you
+   have subjected your computer to an extended soak test while polling the
+   sensors frequently, don't leave you computer unattended. Upgrading to new
+   BIOS version with method version greater than or equal to two should
+   rectify the issue.
+ * A few boards report 12v voltages to be ~10v.

Documentation/hwmon/ina238.rst

+.. SPDX-License-Identifier: GPL-2.0-only
+
+Kernel driver ina238
+====================
+
+Supported chips:
+
+  * Texas Instruments INA238
+
+    Prefix: 'ina238'
+
+    Addresses: I2C 0x40 - 0x4f
+
+    Datasheet:
+	https://www.ti.com/lit/gpn/ina238
+
+Author: Nathan Rossi <nathan.rossi@digi.com>
+
+Description
+-----------
+
+The INA238 is a current shunt, power and temperature monitor with an I2C
+interface. It includes a number of programmable functions including alerts,
+conversion rate, sample averaging and selectable shunt voltage accuracy.
+
+The shunt value in micro-ohms can be set via platform data or device tree at
+compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
+refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings
+if the device tree is used.
+
+Sysfs entries
+-------------
+
+======================= =======================================================
+in0_input		Shunt voltage (mV)
+in0_min			Minimum shunt voltage threshold (mV)
+in0_min_alarm		Minimum shunt voltage alarm
+in0_max			Maximum shunt voltage threshold (mV)
+in0_max_alarm		Maximum shunt voltage alarm
+
+in1_input		Bus voltage (mV)
+in1_min			Minimum bus voltage threshold (mV)
+in1_min_alarm		Minimum shunt voltage alarm
+in1_max			Maximum bus voltage threshold (mV)
+in1_max_alarm		Maximum shunt voltage alarm
+
+power1_input		Power measurement (uW)
+power1_max		Maximum power threshold (uW)
+power1_max_alarm	Maximum power alarm
+
+curr1_input		Current measurement (mA)
+
+temp1_input		Die temperature measurement (mC)
+temp1_max		Maximum die temperature threshold (mC)
+temp1_max_alarm		Maximum die temperature alarm
+======================= =======================================================

Documentation/hwmon/index.rst

@@ -43,6 +43,8 @@ Hardware Monitoring Kernel Drivers
    asb100
    asc7621
    aspeed-pwm-tacho
+   asus_wmi_ec_sensors
+   asus_wmi_sensors
    bcm54140
    bel-pfe
    bpa-rs600
@@ -76,6 +78,7 @@ Hardware Monitoring Kernel Drivers
    ibmpowernv
    ina209
    ina2xx
+   ina238
    ina3221
    intel-m10-bmc-hwmon
    ir35221
@@ -142,6 +145,7 @@ Hardware Monitoring Kernel Drivers
    mlxreg-fan
    mp2888
    mp2975
+   mp5023
    nct6683
    nct6775
    nct7802
@@ -150,6 +154,7 @@ Hardware Monitoring Kernel Drivers
    nsa320
    ntc_thermistor
    nzxt-kraken2
+   nzxt-smart2
    occ
    pc87360
    pc87427

Documentation/hwmon/ir38064.rst

@@ -3,14 +3,38 @@ Kernel driver ir38064
 
 Supported chips:
 
+  * Infineon IR38060
+
+    Prefix: 'IR38060'
+    Addresses scanned: -
+
+    Datasheet: Publicly available at the Infineon website
+      https://www.infineon.com/dgdl/Infineon-IR38060M-DS-v03_16-EN.pdf?fileId=5546d4625c167129015c3291ea9a4cee
+
   * Infineon IR38064
 
     Prefix: 'ir38064'
     Addresses scanned: -
 
-    Datasheet: Publicly available at the Infineon webiste
+    Datasheet: Publicly available at the Infineon website
       https://www.infineon.com/dgdl/Infineon-IR38064MTRPBF-DS-v03_07-EN.pdf?fileId=5546d462584d1d4a0158db0d9efb67ca
 
+  * Infineon IR38164
+
+    Prefix: 'ir38164'
+    Addresses scanned: -
+
+    Datasheet: Publicly available at the Infineon website
+      https://www.infineon.com/dgdl/Infineon-IR38164M-DS-v02_02-EN.pdf?fileId=5546d462636cc8fb01640046efea1248
+
+  * Infineon ir38263
+
+    Prefix: 'ir38263'
+    Addresses scanned: -
+
+    Datasheet:  Publicly available at the Infineon website
+      https://www.infineon.com/dgdl/Infineon-IR38263M-DataSheet-v03_05-EN.pdf?fileId=5546d4625b62cd8a015bcf81f90a6e52
+
 Authors:
       - Maxim Sloyko <maxims@google.com>
       - Patrick Venture <venture@google.com>
@@ -18,7 +42,7 @@ Authors:
 Description
 -----------
 
-IR38064 is a Single-input Voltage, Synchronous Buck Regulator, DC-DC Converter.
+IR38x6x are a Single-input Voltage, Synchronous Buck Regulator, DC-DC Converter.
 
 Usage Notes
 -----------

Documentation/hwmon/mp5023.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver mp5023
+====================
+
+Supported chips:
+
+  * MPS MP5023
+
+    Prefix: 'mp5023'
+
+  * Datasheet
+
+    Publicly available at the MPS website : https://www.monolithicpower.com/en/mp5023.html
+
+Author:
+
+	Howard Chiu <howard.chiu@quantatw.com>
+
+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**

Documentation/hwmon/nzxt-smart2.rst

+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver nzxt-smart2
+=========================
+
+Supported devices:
+
+- NZXT RGB & Fan controller
+- NZXT Smart Device v2
+
+Description
+-----------
+
+This driver implements monitoring and control of fans plugged into the device.
+Besides typical speed monitoring and PWM duty cycle control, voltage and current
+is reported for every fan.
+
+The device also has two connectors for RGB LEDs; support for them isn't
+implemented (mainly because there is no standardized sysfs interface).
+
+Also, the device has a noise sensor, but the sensor seems to be completely
+useless (and very imprecise), so support for it isn't implemented too.
+
+Usage Notes
+-----------
+
+The device should be autodetected, and the driver should load automatically.
+
+If fans are plugged in/unplugged while the system is powered on, the driver
+must be reloaded to detect configuration changes; otherwise, new fans can't
+be controlled (`pwm*` changes will be ignored). It is necessary because the
+device has a dedicated "detect fans" command, and currently, it is executed only
+during initialization. Speed, voltage, current monitoring will work even without
+reload. As an alternative to reloading the module, a userspace tool (like
+`liquidctl`_) can be used to run "detect fans" command through hidraw interface.
+
+The driver coexists with userspace tools that access the device through hidraw
+interface with no known issues.
+
+.. _liquidctl: https://github.com/liquidctl/liquidctl
+
+Sysfs entries
+-------------
+
+=======================	========================================================
+fan[1-3]_input		Fan speed monitoring (in rpm).
+curr[1-3]_input		Current supplied to the fan (in milliamperes).
+in[0-2]_input		Voltage supplied to the fan (in millivolts).
+pwm[1-3]		Controls fan speed: PWM duty cycle for PWM-controlled
+			fans, voltage for other fans. Voltage can be changed in
+			9-12 V range, but the value of the sysfs attribute is
+			always in 0-255 range (1 = 9V, 255 = 12V). Setting the
+			attribute to 0 turns off the fan completely.
+pwm[1-3]_enable		1 if the fan can be controlled by writing to the
+			corresponding pwm* attribute, 0 otherwise. The device
+			can control only the fans it detected itself, so the
+			attribute is read-only.
+pwm[1-3]_mode		Read-only, 1 for PWM-controlled fans, 0 for other fans
+			(or if no fan connected).
+update_interval		The interval at which all inputs are updated (in
+			milliseconds). The default is 1000ms. Minimum is 250ms.
+=======================	========================================================

MAINTAINERS

@@ -3013,6 +3013,20 @@ W:	http://acpi4asus.sf.net
 F:	drivers/platform/x86/asus*.c
 F:	drivers/platform/x86/eeepc*.c
 
+ASUS WMI HARDWARE MONITOR DRIVER
+M:	Ed Brindley <kernel@maidavale.org>
+M:	Denis Pauk <pauk.denis@gmail.com>
+L:	linux-hwmon@vger.kernel.org
+S:	Maintained
+F:	drivers/hwmon/asus_wmi_sensors.c
+
+ASUS WMI EC HARDWARE MONITOR DRIVER
+M:	Eugene Shalygin <eugene.shalygin@gmail.com>
+M:	Denis Pauk <pauk.denis@gmail.com>
+L:	linux-hwmon@vger.kernel.org
+S:	Maintained
+F:	drivers/hwmon/asus_wmi_ec_sensors.c
+
 ASUS WIRELESS RADIO CONTROL DRIVER
 M:	João Paulo Rechi Vita <jprvita@gmail.com>
 L:	platform-driver-x86@vger.kernel.org
@@ -5440,6 +5454,12 @@ W:	https://linuxtv.org
 T:	git git://linuxtv.org/media_tree.git
 F:	drivers/media/platform/sti/delta
 
+DELTA AHE-50DC FAN CONTROL MODULE DRIVER
+M:	Zev Weiss <zev@bewilderbeest.net>
+L:	linux-hwmon@vger.kernel.org
+S:	Maintained
+F:	drivers/hwmon/pmbus/delta-ahe50dc-fan.c
+
 DELTA DPS920AB PSU DRIVER
 M:	Robert Marko <robert.marko@sartura.hr>
 L:	linux-hwmon@vger.kernel.org
@@ -13837,6 +13857,13 @@ S:	Maintained
 F:	Documentation/hwmon/nzxt-kraken2.rst
 F:	drivers/hwmon/nzxt-kraken2.c
 
+NZXT-SMART2 HARDWARE MONITORING DRIVER
+M:	Aleksandr Mezin <mezin.alexander@gmail.com>
+L:	linux-hwmon@vger.kernel.org
+S:	Maintained
+F:	Documentation/hwmon/nzxt-smart2.rst
+F:	drivers/hwmon/nzxt-smart2.c
+
 OBJAGG
 M:	Jiri Pirko <jiri@nvidia.com>
 L:	netdev@vger.kernel.org

arch/x86/kernel/amd_nb.c

@@ -19,12 +19,14 @@
 #define PCI_DEVICE_ID_AMD_17H_M10H_ROOT	0x15d0
 #define PCI_DEVICE_ID_AMD_17H_M30H_ROOT	0x1480
 #define PCI_DEVICE_ID_AMD_17H_M60H_ROOT	0x1630
+#define PCI_DEVICE_ID_AMD_19H_M10H_ROOT	0x14a4
 #define PCI_DEVICE_ID_AMD_17H_DF_F4	0x1464
 #define PCI_DEVICE_ID_AMD_17H_M10H_DF_F4 0x15ec
 #define PCI_DEVICE_ID_AMD_17H_M30H_DF_F4 0x1494
 #define PCI_DEVICE_ID_AMD_17H_M60H_DF_F4 0x144c
 #define PCI_DEVICE_ID_AMD_17H_M70H_DF_F4 0x1444
 #define PCI_DEVICE_ID_AMD_19H_DF_F4	0x1654
+#define PCI_DEVICE_ID_AMD_19H_M10H_DF_F4 0x14b1
 #define PCI_DEVICE_ID_AMD_19H_M40H_ROOT	0x14b5
 #define PCI_DEVICE_ID_AMD_19H_M40H_DF_F4 0x167d
 #define PCI_DEVICE_ID_AMD_19H_M50H_DF_F4 0x166e
@@ -39,6 +41,7 @@ static const struct pci_device_id amd_root_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M10H_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M30H_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M60H_ROOT) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M10H_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M40H_ROOT) },
 	{}
 };
@@ -61,6 +64,7 @@ static const struct pci_device_id amd_nb_misc_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_DF_F3) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M10H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M40H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F3) },
 	{}
@@ -78,6 +82,7 @@ static const struct pci_device_id amd_nb_link_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M60H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_DF_F4) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M10H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M40H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F4) },

drivers/hwmon/Kconfig

@@ -1414,8 +1414,8 @@ config SENSORS_PC87427
 	  will be called pc87427.
 
 config SENSORS_NTC_THERMISTOR
-	tristate "NTC thermistor support from Murata"
-	depends on !OF || IIO=n || IIO
+	tristate "NTC thermistor support"
+	depends on IIO
 	depends on THERMAL || !THERMAL_OF
 	help
 	  This driver supports NTC thermistors sensor reading and its
@@ -1513,6 +1513,16 @@ config SENSORS_NZXT_KRAKEN2
 	  This driver can also be built as a module. If so, the module
 	  will be called nzxt-kraken2.
 
+config SENSORS_NZXT_SMART2
+	tristate "NZXT RGB & Fan Controller/Smart Device v2"
+	depends on USB_HID
+	help
+	  If you say yes here you get support for hardware monitoring for the
+	  NZXT RGB & Fan Controller/Smart Device v2.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called nzxt-smart2.
+
 source "drivers/hwmon/occ/Kconfig"
 
 config SENSORS_PCF8591
@@ -1872,6 +1882,18 @@ config SENSORS_INA2XX
 	  This driver can also be built as a module. If so, the module
 	  will be called ina2xx.
 
+config SENSORS_INA238
+	tristate "Texas Instruments INA238"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  If you say yes here you get support for the INA238 power monitor
+	  chip. This driver supports voltage, current, power and temperature
+	  measurements as well as alarm configuration.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called ina238.
+
 config SENSORS_INA3221
 	tristate "Texas Instruments INA3221 Triple Power Monitor"
 	depends on I2C
@@ -1939,6 +1961,7 @@ config SENSORS_TMP108
 config SENSORS_TMP401
 	tristate "Texas Instruments TMP401 and compatibles"
 	depends on I2C
+	select REGMAP
 	help
 	  If you say yes here you get support for Texas Instruments TMP401,
 	  TMP411, TMP431, TMP432, and TMP435 temperature sensor chips.
@@ -2215,6 +2238,30 @@ config SENSORS_ATK0110
 	  This driver can also be built as a module. If so, the module
 	  will be called asus_atk0110.
 
+config SENSORS_ASUS_WMI
+	tristate "ASUS WMI X370/X470/B450/X399"
+	depends on ACPI_WMI
+	help
+	  If you say yes here you get support for the ACPI hardware monitoring
+	  interface found in X370/X470/B450/X399 ASUS motherboards. This driver
+	  will provide readings of fans, voltages and temperatures through the system
+	  firmware.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called asus_wmi_sensors.
+
+config SENSORS_ASUS_WMI_EC
+	tristate "ASUS WMI B550/X570"
+	depends on ACPI_WMI
+	help
+	  If you say yes here you get support for the ACPI embedded controller
+	  hardware monitoring interface found in B550/X570 ASUS motherboards.
+	  This driver will provide readings of fans, voltages and temperatures
+	  through the system firmware.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called asus_wmi_sensors_ec.
+
 endif # ACPI
 
 endif # HWMON

drivers/hwmon/Makefile

@@ -9,6 +9,8 @@ obj-$(CONFIG_HWMON_VID)		+= hwmon-vid.o
 # APCI drivers
 obj-$(CONFIG_SENSORS_ACPI_POWER) += acpi_power_meter.o
 obj-$(CONFIG_SENSORS_ATK0110)	+= asus_atk0110.o
+obj-$(CONFIG_SENSORS_ASUS_WMI)	+= asus_wmi_sensors.o
+obj-$(CONFIG_SENSORS_ASUS_WMI_EC)	+= asus_wmi_ec_sensors.o
 
 # Native drivers
 # asb100, then w83781d go first, as they can override other drivers' addresses.
@@ -90,6 +92,7 @@ obj-$(CONFIG_SENSORS_IBMPOWERNV)+= ibmpowernv.o
 obj-$(CONFIG_SENSORS_IIO_HWMON) += iio_hwmon.o
 obj-$(CONFIG_SENSORS_INA209)	+= ina209.o
 obj-$(CONFIG_SENSORS_INA2XX)	+= ina2xx.o
+obj-$(CONFIG_SENSORS_INA238)	+= ina238.o
 obj-$(CONFIG_SENSORS_INA3221)	+= ina3221.o
 obj-$(CONFIG_SENSORS_INTEL_M10_BMC_HWMON) += intel-m10-bmc-hwmon.o
 obj-$(CONFIG_SENSORS_IT87)	+= it87.o
@@ -157,6 +160,7 @@ obj-$(CONFIG_SENSORS_NPCM7XX)	+= npcm750-pwm-fan.o
 obj-$(CONFIG_SENSORS_NSA320)	+= nsa320-hwmon.o
 obj-$(CONFIG_SENSORS_NTC_THERMISTOR)	+= ntc_thermistor.o
 obj-$(CONFIG_SENSORS_NZXT_KRAKEN2) += nzxt-kraken2.o
+obj-$(CONFIG_SENSORS_NZXT_SMART2) += nzxt-smart2.o
 obj-$(CONFIG_SENSORS_PC87360)	+= pc87360.o
 obj-$(CONFIG_SENSORS_PC87427)	+= pc87427.o
 obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o

drivers/hwmon/adm1021.c

@@ -324,7 +324,7 @@ static int adm1021_detect(struct i2c_client *client,
 {
 	struct i2c_adapter *adapter = client->adapter;
 	const char *type_name;
-	int conv_rate, status, config, man_id, dev_id;
+	int reg, conv_rate, status, config, man_id, dev_id;
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
 		pr_debug("detect failed, smbus byte data not supported!\n");
@@ -349,9 +349,19 @@ static int adm1021_detect(struct i2c_client *client,
 	if (man_id < 0 || dev_id < 0)
 		return -ENODEV;
 
-	if (man_id == 0x4d && dev_id == 0x01)
+	if (man_id == 0x4d && dev_id == 0x01) {
+		/*
+		 * dev_id 0x01 matches MAX6680, MAX6695, MAX6696, and possibly
+		 * others. Read register which is unsupported on MAX1617 but
+		 * exists on all those chips and compare with the dev_id
+		 * register. If it matches, it may be a MAX1617A.
+		 */
+		reg = i2c_smbus_read_byte_data(client,
+					       ADM1023_REG_REM_TEMP_PREC);
+		if (reg != dev_id)
+			return -ENODEV;
 		type_name = "max1617a";
-	else if (man_id == 0x41) {
+	} else if (man_id == 0x41) {
 		if ((dev_id & 0xF0) == 0x30)
 			type_name = "adm1023";
 		else if ((dev_id & 0xF0) == 0x00)
@@ -395,13 +405,18 @@ static int adm1021_detect(struct i2c_client *client,
 
 		/*
 		 * LM84 Mfr ID is in a different place,
-		 * and it has more unused bits.
+		 * and it has more unused bits. Registers at 0xfe and 0xff
+		 * are undefined and return the most recently read value,
+		 * here the value of the configuration register.
 		 */
 		if (conv_rate == 0x00
+		    && man_id == config && dev_id == config
 		    && (config & 0x7F) == 0x00
 		    && (status & 0xAB) == 0x00) {
 			type_name = "lm84";
 		} else {
+			if ((config & 0x3f) || (status & 0x03))
+				return -ENODEV;
 			/* fail if low limits are larger than high limits */
 			if ((s8)llo > lhi || (s8)rlo > rhi)
 				return -ENODEV;

drivers/hwmon/adm1031.c

@@ -242,9 +242,8 @@ static int FAN_TO_REG(int reg, int div)
 static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm)
 {
 	int ret;
-	int range = val - AUTO_TEMP_MIN_FROM_REG(reg);
+	int range = ((val - AUTO_TEMP_MIN_FROM_REG(reg)) * 10) / (16 - pwm);
 
-	range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm);
 	ret = ((reg & 0xf8) |
 	       (range < 10000 ? 0 :
 		range < 20000 ? 1 :

drivers/hwmon/asus_wmi_ec_sensors.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HWMON driver for ASUS B550/X570 motherboards that publish sensor
+ * values via the embedded controller registers.
+ *
+ * Copyright (C) 2021 Eugene Shalygin <eugene.shalygin@gmail.com>
+ * Copyright (C) 2018-2019 Ed Brindley <kernel@maidavale.org>
+ *
+ * EC provides:
+ * - Chipset temperature
+ * - CPU temperature
+ * - Motherboard temperature
+ * - T_Sensor temperature
+ * - VRM temperature
+ * - Water In temperature
+ * - Water Out temperature
+ * - CPU Optional Fan RPM
+ * - Chipset Fan RPM
+ * - Water Flow Fan RPM
+ * - CPU current
+ */
+
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/hwmon.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/nls.h>
+#include <linux/units.h>
+#include <linux/wmi.h>
+
+#include <asm/unaligned.h>
+
+#define ASUSWMI_MONITORING_GUID		"466747A0-70EC-11DE-8A39-0800200C9A66"
+#define ASUSWMI_METHODID_BLOCK_READ_EC	0x42524543 /* BREC */
+/* From the ASUS DSDT source */
+#define ASUSWMI_BREC_REGISTERS_MAX	16
+#define ASUSWMI_MAX_BUF_LEN		128
+#define SENSOR_LABEL_LEN		16
+
+static u32 hwmon_attributes[hwmon_max] = {
+	[hwmon_chip]	= HWMON_C_REGISTER_TZ,
+	[hwmon_temp]	= HWMON_T_INPUT | HWMON_T_LABEL,
+	[hwmon_in]	= HWMON_I_INPUT | HWMON_I_LABEL,
+	[hwmon_curr]	= HWMON_C_INPUT | HWMON_C_LABEL,
+	[hwmon_fan]	= HWMON_F_INPUT | HWMON_F_LABEL,
+};
+
+struct asus_wmi_ec_sensor_address {
+	u8 index;
+	u8 bank;
+	u8 size;
+};
+
+#define MAKE_SENSOR_ADDRESS(size_i, bank_i, index_i) {	\
+	.size = size_i,					\
+	.bank = bank_i,					\
+	.index = index_i,				\
+}
+
+struct ec_sensor_info {
+	struct asus_wmi_ec_sensor_address addr;
+	char label[SENSOR_LABEL_LEN];
+	enum hwmon_sensor_types type;
+};
+
+#define EC_SENSOR(sensor_label, sensor_type, size, bank, index) {	\
+	.addr = MAKE_SENSOR_ADDRESS(size, bank, index),			\
+	.label = sensor_label,						\
+	.type = sensor_type,						\
+}
+
+enum known_ec_sensor {
+	SENSOR_TEMP_CHIPSET,
+	SENSOR_TEMP_CPU,
+	SENSOR_TEMP_MB,
+	SENSOR_TEMP_T_SENSOR,
+	SENSOR_TEMP_VRM,
+	SENSOR_FAN_CPU_OPT,
+	SENSOR_FAN_CHIPSET,
+	SENSOR_FAN_VRM_HS,
+	SENSOR_FAN_WATER_FLOW,
+	SENSOR_CURR_CPU,
+	SENSOR_TEMP_WATER_IN,
+	SENSOR_TEMP_WATER_OUT,
+	SENSOR_MAX
+};
+
+/* All known sensors for ASUS EC controllers */
+static const struct ec_sensor_info known_ec_sensors[] = {
+	[SENSOR_TEMP_CHIPSET]	= EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
+	[SENSOR_TEMP_CPU]	= EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
+	[SENSOR_TEMP_MB]	= EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
+	[SENSOR_TEMP_T_SENSOR]	= EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
+	[SENSOR_TEMP_VRM]	= EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
+	[SENSOR_FAN_CPU_OPT]	= EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xb0),
+	[SENSOR_FAN_VRM_HS]	= EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
+	[SENSOR_FAN_CHIPSET]	= EC_SENSOR("Chipset", hwmon_fan, 2, 0x00, 0xb4),
+	[SENSOR_FAN_WATER_FLOW]	= EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xbc),
+	[SENSOR_CURR_CPU]	= EC_SENSOR("CPU", hwmon_curr, 1, 0x00, 0xf4),
+	[SENSOR_TEMP_WATER_IN]	= EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x00),
+	[SENSOR_TEMP_WATER_OUT]	= EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x01),
+};
+
+struct asus_wmi_data {
+	const enum known_ec_sensor known_board_sensors[SENSOR_MAX + 1];
+};
+
+/* boards with EC support */
+static struct asus_wmi_data sensors_board_PW_X570_P = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB, SENSOR_TEMP_VRM,
+		SENSOR_FAN_CHIPSET,
+		SENSOR_MAX
+	},
+};
+
+static struct asus_wmi_data sensors_board_PW_X570_A = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB, SENSOR_TEMP_VRM,
+		SENSOR_FAN_CHIPSET,
+		SENSOR_CURR_CPU,
+		SENSOR_MAX
+	},
+};
+
+static struct asus_wmi_data sensors_board_R_C8H = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB,
+		SENSOR_TEMP_T_SENSOR, SENSOR_TEMP_VRM,
+		SENSOR_TEMP_WATER_IN, SENSOR_TEMP_WATER_OUT,
+		SENSOR_FAN_CPU_OPT, SENSOR_FAN_CHIPSET, SENSOR_FAN_WATER_FLOW,
+		SENSOR_CURR_CPU,
+		SENSOR_MAX
+	},
+};
+
+/* Same as Hero but without chipset fan */
+static struct asus_wmi_data sensors_board_R_C8DH = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB,
+		SENSOR_TEMP_T_SENSOR, SENSOR_TEMP_VRM,
+		SENSOR_TEMP_WATER_IN, SENSOR_TEMP_WATER_OUT,
+		SENSOR_FAN_CPU_OPT, SENSOR_FAN_WATER_FLOW,
+		SENSOR_CURR_CPU,
+		SENSOR_MAX
+	},
+};
+
+/* Same as Hero but without water */
+static struct asus_wmi_data sensors_board_R_C8F = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB,
+		SENSOR_TEMP_T_SENSOR, SENSOR_TEMP_VRM,
+		SENSOR_FAN_CPU_OPT, SENSOR_FAN_CHIPSET,
+		SENSOR_CURR_CPU,
+		SENSOR_MAX
+	},
+};
+
+static struct asus_wmi_data sensors_board_RS_B550_E_G = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB,
+		SENSOR_TEMP_T_SENSOR, SENSOR_TEMP_VRM,
+		SENSOR_FAN_CPU_OPT,
+		SENSOR_MAX
+	},
+};
+
+static struct asus_wmi_data sensors_board_RS_B550_I_G = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB,
+		SENSOR_TEMP_T_SENSOR, SENSOR_TEMP_VRM,
+		SENSOR_FAN_VRM_HS,
+		SENSOR_CURR_CPU,
+		SENSOR_MAX
+	},
+};
+
+static struct asus_wmi_data sensors_board_RS_X570_E_G = {
+	.known_board_sensors = {
+		SENSOR_TEMP_CHIPSET, SENSOR_TEMP_CPU, SENSOR_TEMP_MB,
+		SENSOR_TEMP_T_SENSOR, SENSOR_TEMP_VRM,
+		SENSOR_FAN_CHIPSET,
+		SENSOR_CURR_CPU,
+		SENSOR_MAX
+	},
+};
+
+#define DMI_EXACT_MATCH_ASUS_BOARD_NAME(name, sensors) {			\
+	.matches = {								\
+		DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC."),	\
+		DMI_EXACT_MATCH(DMI_BOARD_NAME, name),				\
+	},									\
+	.driver_data = sensors,							\
+}
+
+static const struct dmi_system_id asus_wmi_ec_dmi_table[] = {
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X570-PRO", &sensors_board_PW_X570_P),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("Pro WS X570-ACE", &sensors_board_PW_X570_A),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII DARK HERO", &sensors_board_R_C8DH),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII FORMULA", &sensors_board_R_C8F),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII HERO", &sensors_board_R_C8H),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B550-E GAMING", &sensors_board_RS_B550_E_G),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B550-I GAMING", &sensors_board_RS_B550_I_G),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-E GAMING", &sensors_board_RS_X570_E_G),
+	{}
+};
+MODULE_DEVICE_TABLE(dmi, asus_wmi_ec_dmi_table);
+
+struct ec_sensor {
+	enum known_ec_sensor info_index;
+	long cached_value;
+};
+
+/**
+ * struct asus_wmi_ec_info - sensor info.
+ * @sensors: list of sensors.
+ * @read_arg: UTF-16LE string to pass to BRxx() WMI function.
+ * @read_buffer: decoded output from WMI result.
+ * @nr_sensors: number of board EC sensors.
+ * @nr_registers: number of EC registers to read (sensor might span more than 1 register).
+ * @last_updated: in jiffies.
+ */
+struct asus_wmi_ec_info {
+	struct ec_sensor sensors[SENSOR_MAX];
+	char read_arg[(ASUSWMI_BREC_REGISTERS_MAX * 4 + 1) * 2];
+	u8 read_buffer[ASUSWMI_BREC_REGISTERS_MAX];
+	unsigned int nr_sensors;
+	unsigned int nr_registers;
+	unsigned long last_updated;
+};
+
+struct asus_wmi_sensors {
+	struct asus_wmi_ec_info ec;
+	/* lock access to internal cache */
+	struct mutex lock;
+};
+
+static int asus_wmi_ec_fill_board_sensors(struct asus_wmi_ec_info *ec,
+					  const enum known_ec_sensor *bsi)
+{
+	struct ec_sensor *s = ec->sensors;
+	int i;
+
+	ec->nr_sensors = 0;
+	ec->nr_registers = 0;
+
+	for (i = 0; bsi[i] != SENSOR_MAX; i++) {
+		s[i].info_index = bsi[i];
+		ec->nr_sensors++;
+		ec->nr_registers += known_ec_sensors[bsi[i]].addr.size;
+	}
+
+	return 0;
+}
+
+/*
+ * The next four functions convert to or from BRxx string argument format.
+ * The format of the string is as follows:
+ * - The string consists of two-byte UTF-16LE characters.
+ * - The value of the very first byte in the string is equal to the total
+ *   length of the next string in bytes, thus excluding the first two-byte
+ *   character.
+ * - The rest of the string encodes the pairs of (bank, index) pairs, where
+ *   both values are byte-long (0x00 to 0xFF).
+ * - Numbers are encoded as UTF-16LE hex values.
+ */
+static int asus_wmi_ec_decode_reply_buffer(const u8 *in, u32 length, u8 *out)
+{
+	char buffer[ASUSWMI_MAX_BUF_LEN * 2];
+	u32 len = min_t(u32, get_unaligned_le16(in), length - 2);
+
+	utf16s_to_utf8s((wchar_t *)(in + 2), len / 2, UTF16_LITTLE_ENDIAN, buffer, sizeof(buffer));
+
+	return hex2bin(out, buffer, len / 4);
+}
+
+static void asus_wmi_ec_encode_registers(const u8 *in, u32 len, char *out)
+{
+	char buffer[ASUSWMI_MAX_BUF_LEN * 2];
+
+	bin2hex(buffer, in, len);
+
+	utf8s_to_utf16s(buffer, len * 2, UTF16_LITTLE_ENDIAN, (wchar_t *)(out + 2), len * 2);
+
+	put_unaligned_le16(len * 4, out);
+}
+
+static void asus_wmi_ec_make_block_read_query(struct asus_wmi_ec_info *ec)
+{
+	u8 registers[ASUSWMI_BREC_REGISTERS_MAX * 2];
+	const struct ec_sensor_info *si;
+	int i, j, offset;
+
+	offset = 0;
+	for (i = 0; i < ec->nr_sensors; i++) {
+		si = &known_ec_sensors[ec->sensors[i].info_index];
+		for (j = 0; j < si->addr.size; j++) {
+			registers[offset++] = si->addr.bank;
+			registers[offset++] = si->addr.index + j;
+		}
+	}
+
+	asus_wmi_ec_encode_registers(registers, offset, ec->read_arg);
+}
+
+static int asus_wmi_ec_block_read(u32 method_id, char *query, u8 *out)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_buffer input;
+	union acpi_object *obj;
+	acpi_status status;
+	int ret;
+
+	/* The first byte of the BRxx() argument string has to be the string size. */
+	input.length = query[0] + 2;
+	input.pointer = query;
+	status = wmi_evaluate_method(ASUSWMI_MONITORING_GUID, 0, method_id, &input, &output);
+	if (ACPI_FAILURE(status))
+		return -EIO;
+
+	obj = output.pointer;
+	if (!obj)
+		return -EIO;
+
+	if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 2) {
+		ret = -EIO;
+		goto out_free_obj;
+	}
+
+	ret = asus_wmi_ec_decode_reply_buffer(obj->buffer.pointer, obj->buffer.length, out);
+
+out_free_obj:
+	ACPI_FREE(obj);
+	return ret;
+}
+
+static inline long get_sensor_value(const struct ec_sensor_info *si, u8 *data)
+{
+	switch (si->addr.size) {
+	case 1:
+		return *data;
+	case 2:
+		return get_unaligned_be16(data);
+	case 4:
+		return get_unaligned_be32(data);
+	default:
+		return 0;
+	}
+}
+
+static void asus_wmi_ec_update_ec_sensors(struct asus_wmi_ec_info *ec)
+{
+	const struct ec_sensor_info *si;
+	struct ec_sensor *s;
+	u8 i_sensor;
+	u8 *data;
+
+	data = ec->read_buffer;
+	for (i_sensor = 0; i_sensor < ec->nr_sensors; i_sensor++) {
+		s = &ec->sensors[i_sensor];
+		si = &known_ec_sensors[s->info_index];
+		s->cached_value = get_sensor_value(si, data);
+		data += si->addr.size;
+	}
+}
+
+static long asus_wmi_ec_scale_sensor_value(long value, int data_type)
+{
+	switch (data_type) {
+	case hwmon_curr:
+	case hwmon_temp:
+	case hwmon_in:
+		return value * MILLI;
+	default:
+		return value;
+	}
+}
+
+static int asus_wmi_ec_find_sensor_index(const struct asus_wmi_ec_info *ec,
+					 enum hwmon_sensor_types type, int channel)
+{
+	int i;
+
+	for (i = 0; i < ec->nr_sensors; i++) {
+		if (known_ec_sensors[ec->sensors[i].info_index].type == type) {
+			if (channel == 0)
+				return i;
+
+			channel--;
+		}
+	}
+	return -EINVAL;
+}
+
+static int asus_wmi_ec_get_cached_value_or_update(struct asus_wmi_sensors *sensor_data,
+						  int sensor_index,
+						  long *value)
+{
+	struct asus_wmi_ec_info *ec = &sensor_data->ec;
+	int ret = 0;
+
+	mutex_lock(&sensor_data->lock);
+
+	if (time_after(jiffies, ec->last_updated + HZ)) {
+		ret = asus_wmi_ec_block_read(ASUSWMI_METHODID_BLOCK_READ_EC,
+					     ec->read_arg, ec->read_buffer);
+		if (ret)
+			goto unlock;
+
+		asus_wmi_ec_update_ec_sensors(ec);
+		ec->last_updated = jiffies;
+	}
+
+	*value = ec->sensors[sensor_index].cached_value;
+
+unlock:
+	mutex_unlock(&sensor_data->lock);
+
+	return ret;
+}
+
+/* Now follow the functions that implement the hwmon interface */
+
+static int asus_wmi_ec_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+				  u32 attr, int channel, long *val)
+{
+	struct asus_wmi_sensors *sensor_data = dev_get_drvdata(dev);
+	struct asus_wmi_ec_info *ec = &sensor_data->ec;
+	int ret, sidx, info_index;
+	long value = 0;
+
+	sidx = asus_wmi_ec_find_sensor_index(ec, type, channel);
+	if (sidx < 0)
+		return sidx;
+
+	ret = asus_wmi_ec_get_cached_value_or_update(sensor_data, sidx, &value);
+	if (ret)
+		return ret;
+
+	info_index = ec->sensors[sidx].info_index;
+	*val = asus_wmi_ec_scale_sensor_value(value, known_ec_sensors[info_index].type);
+
+	return ret;
+}
+
+static int asus_wmi_ec_hwmon_read_string(struct device *dev,
+					 enum hwmon_sensor_types type, u32 attr,
+					 int channel, const char **str)
+{
+	struct asus_wmi_sensors *sensor_data = dev_get_drvdata(dev);
+	struct asus_wmi_ec_info *ec = &sensor_data->ec;
+	int sensor_index;
+
+	sensor_index = asus_wmi_ec_find_sensor_index(ec, type, channel);
+	*str = known_ec_sensors[ec->sensors[sensor_index].info_index].label;
+
+	return 0;
+}
+
+static umode_t asus_wmi_ec_hwmon_is_visible(const void *drvdata,
+					    enum hwmon_sensor_types type, u32 attr,
+					    int channel)
+{
+	const struct asus_wmi_sensors *sensor_data = drvdata;
+	const struct asus_wmi_ec_info *ec = &sensor_data->ec;
+	int index;
+
+	index = asus_wmi_ec_find_sensor_index(ec, type, channel);
+
+	return index < 0 ? 0 : 0444;
+}
+
+static int asus_wmi_hwmon_add_chan_info(struct hwmon_channel_info *asus_wmi_hwmon_chan,
+					struct device *dev, int num,
+					enum hwmon_sensor_types type, u32 config)
+{
+	u32 *cfg;
+
+	cfg = devm_kcalloc(dev, num + 1, sizeof(*cfg), GFP_KERNEL);
+	if (!cfg)
+		return -ENOMEM;
+
+	asus_wmi_hwmon_chan->type = type;
+	asus_wmi_hwmon_chan->config = cfg;
+	memset32(cfg, config, num);
+
+	return 0;
+}
+
+static const struct hwmon_ops asus_wmi_ec_hwmon_ops = {
+	.is_visible = asus_wmi_ec_hwmon_is_visible,
+	.read = asus_wmi_ec_hwmon_read,
+	.read_string = asus_wmi_ec_hwmon_read_string,
+};
+
+static struct hwmon_chip_info asus_wmi_ec_chip_info = {
+	.ops = &asus_wmi_ec_hwmon_ops,
+};
+
+static int asus_wmi_ec_configure_sensor_setup(struct device *dev,
+					      const enum known_ec_sensor *bsi)
+{
+	struct asus_wmi_sensors *sensor_data = dev_get_drvdata(dev);
+	struct asus_wmi_ec_info *ec = &sensor_data->ec;
+	struct hwmon_channel_info *asus_wmi_hwmon_chan;
+	const struct hwmon_channel_info **asus_wmi_ci;
+	int nr_count[hwmon_max] = {}, nr_types = 0;
+	const struct hwmon_chip_info *chip_info;
+	const struct ec_sensor_info *si;
+	enum hwmon_sensor_types type;
+	struct device *hwdev;
+	int i, ret;
+
+	ret = asus_wmi_ec_fill_board_sensors(ec, bsi);
+	if (ret)
+		return ret;
+
+	if (!sensor_data->ec.nr_sensors)
+		return -ENODEV;
+
+	for (i = 0; i < ec->nr_sensors; i++) {
+		si = &known_ec_sensors[ec->sensors[i].info_index];
+		if (!nr_count[si->type])
+			nr_types++;
+		nr_count[si->type]++;
+	}
+
+	if (nr_count[hwmon_temp]) {
+		nr_count[hwmon_chip]++;
+		nr_types++;
+	}
+
+	/*
+	 * If we can get values for all the registers in a single query,
+	 * the query will not change from call to call.
+	 */
+	asus_wmi_ec_make_block_read_query(ec);
+
+	asus_wmi_hwmon_chan = devm_kcalloc(dev, nr_types, sizeof(*asus_wmi_hwmon_chan),
+					   GFP_KERNEL);
+	if (!asus_wmi_hwmon_chan)
+		return -ENOMEM;
+
+	asus_wmi_ci = devm_kcalloc(dev, nr_types + 1, sizeof(*asus_wmi_ci), GFP_KERNEL);
+	if (!asus_wmi_ci)
+		return -ENOMEM;
+
+	asus_wmi_ec_chip_info.info = asus_wmi_ci;
+	chip_info = &asus_wmi_ec_chip_info;
+
+	for (type = 0; type < hwmon_max; type++) {
+		if (!nr_count[type])
+			continue;
+
+		ret = asus_wmi_hwmon_add_chan_info(asus_wmi_hwmon_chan, dev,
+						   nr_count[type], type,
+						   hwmon_attributes[type]);
+		if (ret)
+			return ret;
+
+		*asus_wmi_ci++ = asus_wmi_hwmon_chan++;
+	}
+
+	dev_dbg(dev, "board has %d EC sensors that span %d registers",
+		ec->nr_sensors, ec->nr_registers);
+
+	hwdev = devm_hwmon_device_register_with_info(dev, "asus_wmi_ec_sensors",
+						     sensor_data, chip_info, NULL);
+
+	return PTR_ERR_OR_ZERO(hwdev);
+}
+
+static int asus_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+	struct asus_wmi_sensors *sensor_data;
+	struct asus_wmi_data *board_sensors;
+	const struct dmi_system_id *dmi_id;
+	const enum known_ec_sensor *bsi;
+	struct device *dev = &wdev->dev;
+
+	dmi_id = dmi_first_match(asus_wmi_ec_dmi_table);
+	if (!dmi_id)
+		return -ENODEV;
+
+	board_sensors = dmi_id->driver_data;
+	bsi = board_sensors->known_board_sensors;
+
+	sensor_data = devm_kzalloc(dev, sizeof(*sensor_data), GFP_KERNEL);
+	if (!sensor_data)
+		return -ENOMEM;
+
+	mutex_init(&sensor_data->lock);
+
+	dev_set_drvdata(dev, sensor_data);
+
+	return asus_wmi_ec_configure_sensor_setup(dev, bsi);
+}
+
+static const struct wmi_device_id asus_ec_wmi_id_table[] = {
+	{ ASUSWMI_MONITORING_GUID, NULL },
+	{ }
+};
+
+static struct wmi_driver asus_sensors_wmi_driver = {
+	.driver = {
+		.name = "asus_wmi_ec_sensors",
+	},
+	.id_table = asus_ec_wmi_id_table,
+	.probe = asus_wmi_probe,
+};
+module_wmi_driver(asus_sensors_wmi_driver);
+
+MODULE_AUTHOR("Ed Brindley <kernel@maidavale.org>");
+MODULE_AUTHOR("Eugene Shalygin <eugene.shalygin@gmail.com>");
+MODULE_DESCRIPTION("Asus WMI Sensors Driver");
+MODULE_LICENSE("GPL");

drivers/hwmon/asus_wmi_sensors.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HWMON driver for ASUS motherboards that provides sensor readouts via WMI
+ * interface present in the UEFI of the X370/X470/B450/X399 Ryzen motherboards.
+ *
+ * Copyright (C) 2018-2019 Ed Brindley <kernel@maidavale.org>
+ *
+ * WMI interface provides:
+ * - CPU Core Voltage,
+ * - CPU SOC Voltage,
+ * - DRAM Voltage,
+ * - VDDP Voltage,
+ * - 1.8V PLL Voltage,
+ * - +12V Voltage,
+ * - +5V Voltage,
+ * - 3VSB Voltage,
+ * - VBAT Voltage,
+ * - AVCC3 Voltage,
+ * - SB 1.05V Voltage,
+ * - CPU Core Voltage,
+ * - CPU SOC Voltage,
+ * - DRAM Voltage,
+ * - CPU Fan RPM,
+ * - Chassis Fan 1 RPM,
+ * - Chassis Fan 2 RPM,
+ * - Chassis Fan 3 RPM,
+ * - HAMP Fan RPM,
+ * - Water Pump RPM,
+ * - CPU OPT RPM,
+ * - Water Flow RPM,
+ * - AIO Pump RPM,
+ * - CPU Temperature,
+ * - CPU Socket Temperature,
+ * - Motherboard Temperature,
+ * - Chipset Temperature,
+ * - Tsensor 1 Temperature,
+ * - CPU VRM Temperature,
+ * - Water In,
+ * - Water Out,
+ * - CPU VRM Output Current.
+ */
+
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/hwmon.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/units.h>
+#include <linux/wmi.h>
+
+#define ASUSWMI_MONITORING_GUID		"466747A0-70EC-11DE-8A39-0800200C9A66"
+#define ASUSWMI_METHODID_GET_VALUE	0x52574543 /* RWEC */
+#define ASUSWMI_METHODID_UPDATE_BUFFER	0x51574543 /* QWEC */
+#define ASUSWMI_METHODID_GET_INFO	0x50574543 /* PWEC */
+#define ASUSWMI_METHODID_GET_NUMBER	0x50574572 /* PWEr */
+#define ASUSWMI_METHODID_GET_VERSION	0x50574574 /* PWEt */
+
+#define ASUS_WMI_MAX_STR_SIZE		32
+
+#define DMI_EXACT_MATCH_ASUS_BOARD_NAME(name) {					\
+	.matches = {								\
+		DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC."),	\
+		DMI_EXACT_MATCH(DMI_BOARD_NAME, name),				\
+	},									\
+}
+
+static const struct dmi_system_id asus_wmi_dmi_table[] = {
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X399-A"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X470-PRO"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VI EXTREME"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VI HERO"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VI HERO (WI-FI AC)"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VII HERO"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VII HERO (WI-FI)"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-E GAMING"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-F GAMING"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B450-I GAMING"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X399-E GAMING"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X470-F GAMING"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X470-I GAMING"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG ZENITH EXTREME"),
+	DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG ZENITH EXTREME ALPHA"),
+	{}
+};
+MODULE_DEVICE_TABLE(dmi, asus_wmi_dmi_table);
+
+enum asus_wmi_sensor_class {
+	VOLTAGE		= 0x0,
+	TEMPERATURE_C	= 0x1,
+	FAN_RPM		= 0x2,
+	CURRENT		= 0x3,
+	WATER_FLOW	= 0x4,
+};
+
+enum asus_wmi_location {
+	CPU		= 0x0,
+	CPU_SOC		= 0x1,
+	DRAM		= 0x2,
+	MOTHERBOARD	= 0x3,
+	CHIPSET		= 0x4,
+	AUX		= 0x5,
+	VRM		= 0x6,
+	COOLER		= 0x7
+};
+
+enum asus_wmi_type {
+	SIGNED_INT	= 0x0,
+	UNSIGNED_INT	= 0x1,
+	SCALED		= 0x3,
+};
+
+enum asus_wmi_source {
+	SIO		= 0x1,
+	EC		= 0x2
+};
+
+static enum hwmon_sensor_types asus_data_types[] = {
+	[VOLTAGE]	= hwmon_in,
+	[TEMPERATURE_C]	= hwmon_temp,
+	[FAN_RPM]	= hwmon_fan,
+	[CURRENT]	= hwmon_curr,
+	[WATER_FLOW]	= hwmon_fan,
+};
+
+static u32 hwmon_attributes[hwmon_max] = {
+	[hwmon_chip]	= HWMON_C_REGISTER_TZ,
+	[hwmon_temp]	= HWMON_T_INPUT | HWMON_T_LABEL,
+	[hwmon_in]	= HWMON_I_INPUT | HWMON_I_LABEL,
+	[hwmon_curr]	= HWMON_C_INPUT | HWMON_C_LABEL,
+	[hwmon_fan]	= HWMON_F_INPUT | HWMON_F_LABEL,
+};
+
+/**
+ * struct asus_wmi_sensor_info - sensor info.
+ * @id: sensor id.
+ * @data_type: sensor class e.g. voltage, temp etc.
+ * @location: sensor location.
+ * @name: sensor name.
+ * @source: sensor source.
+ * @type: sensor type signed, unsigned etc.
+ * @cached_value: cached sensor value.
+ */
+struct asus_wmi_sensor_info {
+	u32 id;
+	int data_type;
+	int location;
+	char name[ASUS_WMI_MAX_STR_SIZE];
+	int source;
+	int type;
+	long cached_value;
+};
+
+struct asus_wmi_wmi_info {
+	unsigned long source_last_updated[3];	/* in jiffies */
+	int sensor_count;
+
+	const struct asus_wmi_sensor_info **info[hwmon_max];
+	struct asus_wmi_sensor_info **info_by_id;
+};
+
+struct asus_wmi_sensors {
+	struct asus_wmi_wmi_info wmi;
+	/* lock access to internal cache */
+	struct mutex lock;
+};
+
+/*
+ * Universal method for calling WMI method
+ */
+static int asus_wmi_call_method(u32 method_id, u32 *args, struct acpi_buffer *output)
+{
+	struct acpi_buffer input = {(acpi_size) sizeof(*args), args };
+	acpi_status status;
+
+	status = wmi_evaluate_method(ASUSWMI_MONITORING_GUID, 0,
+				     method_id, &input, output);
+	if (ACPI_FAILURE(status))
+		return -EIO;
+
+	return 0;
+}
+
+/*
+ * Gets the version of the ASUS sensors interface implemented
+ */
+static int asus_wmi_get_version(u32 *version)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	u32 args[] = {0, 0, 0};
+	union acpi_object *obj;
+	int err;
+
+	err = asus_wmi_call_method(ASUSWMI_METHODID_GET_VERSION, args, &output);
+	if (err)
+		return err;
+
+	obj = output.pointer;
+	if (!obj)
+		return -EIO;
+
+	if (obj->type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	err = 0;
+	*version = obj->integer.value;
+
+out_free_obj:
+	ACPI_FREE(obj);
+	return err;
+}
+
+/*
+ * Gets the number of sensor items
+ */
+static int asus_wmi_get_item_count(u32 *count)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	u32 args[] = {0, 0, 0};
+	union acpi_object *obj;
+	int err;
+
+	err = asus_wmi_call_method(ASUSWMI_METHODID_GET_NUMBER, args, &output);
+	if (err)
+		return err;
+
+	obj = output.pointer;
+	if (!obj)
+		return -EIO;
+
+	if (obj->type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	err = 0;
+	*count = obj->integer.value;
+
+out_free_obj:
+	ACPI_FREE(obj);
+	return err;
+}
+
+static int asus_wmi_hwmon_add_chan_info(struct hwmon_channel_info *asus_wmi_hwmon_chan,
+					struct device *dev, int num,
+					enum hwmon_sensor_types type, u32 config)
+{
+	u32 *cfg;
+
+	cfg = devm_kcalloc(dev, num + 1, sizeof(*cfg), GFP_KERNEL);
+	if (!cfg)
+		return -ENOMEM;
+
+	asus_wmi_hwmon_chan->type = type;
+	asus_wmi_hwmon_chan->config = cfg;
+	memset32(cfg, config, num);
+
+	return 0;
+}
+
+/*
+ * For a given sensor item returns details e.g. type (voltage/temperature/fan speed etc), bank etc
+ */
+static int asus_wmi_sensor_info(int index, struct asus_wmi_sensor_info *s)
+{
+	union acpi_object name_obj, data_type_obj, location_obj, source_obj, type_obj;
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	u32 args[] = {index, 0};
+	union acpi_object *obj;
+	int err;
+
+	err = asus_wmi_call_method(ASUSWMI_METHODID_GET_INFO, args, &output);
+	if (err)
+		return err;
+
+	s->id = index;
+
+	obj = output.pointer;
+	if (!obj)
+		return -EIO;
+
+	if (obj->type != ACPI_TYPE_PACKAGE) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	if (obj->package.count != 5) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	name_obj = obj->package.elements[0];
+	if (name_obj.type != ACPI_TYPE_STRING) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	strncpy(s->name, name_obj.string.pointer, sizeof(s->name) - 1);
+
+	data_type_obj = obj->package.elements[1];
+	if (data_type_obj.type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	s->data_type = data_type_obj.integer.value;
+
+	location_obj = obj->package.elements[2];
+	if (location_obj.type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	s->location = location_obj.integer.value;
+
+	source_obj = obj->package.elements[3];
+	if (source_obj.type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	s->source = source_obj.integer.value;
+
+	type_obj = obj->package.elements[4];
+	if (type_obj.type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	err = 0;
+	s->type = type_obj.integer.value;
+
+out_free_obj:
+	ACPI_FREE(obj);
+	return err;
+}
+
+static int asus_wmi_update_buffer(int source)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	u32 args[] = {source, 0};
+
+	return asus_wmi_call_method(ASUSWMI_METHODID_UPDATE_BUFFER, args, &output);
+}
+
+static int asus_wmi_get_sensor_value(u8 index, long *value)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	u32 args[] = {index, 0};
+	union acpi_object *obj;
+	int err;
+
+	err = asus_wmi_call_method(ASUSWMI_METHODID_GET_VALUE, args, &output);
+	if (err)
+		return err;
+
+	obj = output.pointer;
+	if (!obj)
+		return -EIO;
+
+	if (obj->type != ACPI_TYPE_INTEGER) {
+		err = -EIO;
+		goto out_free_obj;
+	}
+
+	err = 0;
+	*value = obj->integer.value;
+
+out_free_obj:
+	ACPI_FREE(obj);
+	return err;
+}
+
+static int asus_wmi_update_values_for_source(u8 source, struct asus_wmi_sensors *sensor_data)
+{
+	struct asus_wmi_sensor_info *sensor;
+	long value = 0;
+	int ret;
+	int i;
+
+	for (i = 0; i < sensor_data->wmi.sensor_count; i++) {
+		sensor = sensor_data->wmi.info_by_id[i];
+		if (sensor && sensor->source == source) {
+			ret = asus_wmi_get_sensor_value(sensor->id, &value);
+			if (ret)
+				return ret;
+
+			sensor->cached_value = value;
+		}
+	}
+
+	return 0;
+}
+
+static int asus_wmi_scale_sensor_value(u32 value, int data_type)
+{
+	/* FAN_RPM and WATER_FLOW don't need scaling */
+	switch (data_type) {
+	case VOLTAGE:
+		/* value in microVolts */
+		return DIV_ROUND_CLOSEST(value,  KILO);
+	case TEMPERATURE_C:
+		/* value in Celsius */
+		return value * MILLIDEGREE_PER_DEGREE;
+	case CURRENT:
+		/* value in Amperes */
+		return value * MILLI;
+	}
+	return value;
+}
+
+static int asus_wmi_get_cached_value_or_update(const struct asus_wmi_sensor_info *sensor,
+					       struct asus_wmi_sensors *sensor_data,
+					       u32 *value)
+{
+	int ret = 0;
+
+	mutex_lock(&sensor_data->lock);
+
+	if (time_after(jiffies, sensor_data->wmi.source_last_updated[sensor->source] + HZ)) {
+		ret = asus_wmi_update_buffer(sensor->source);
+		if (ret)
+			goto unlock;
+
+		ret = asus_wmi_update_values_for_source(sensor->source, sensor_data);
+		if (ret)
+			goto unlock;
+
+		sensor_data->wmi.source_last_updated[sensor->source] = jiffies;
+	}
+
+	*value = sensor->cached_value;
+
+unlock:
+	mutex_unlock(&sensor_data->lock);
+
+	return ret;
+}
+
+/* Now follow the functions that implement the hwmon interface */
+static int asus_wmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+			       u32 attr, int channel, long *val)
+{
+	const struct asus_wmi_sensor_info *sensor;
+	u32 value = 0;
+	int ret;
+
+	struct asus_wmi_sensors *sensor_data = dev_get_drvdata(dev);
+
+	sensor = *(sensor_data->wmi.info[type] + channel);
+
+	ret = asus_wmi_get_cached_value_or_update(sensor, sensor_data, &value);
+	if (ret)
+		return ret;
+
+	*val = asus_wmi_scale_sensor_value(value, sensor->data_type);
+
+	return ret;
+}
+
+static int asus_wmi_hwmon_read_string(struct device *dev,
+				      enum hwmon_sensor_types type, u32 attr,
+				      int channel, const char **str)
+{
+	struct asus_wmi_sensors *sensor_data = dev_get_drvdata(dev);
+	const struct asus_wmi_sensor_info *sensor;
+
+	sensor = *(sensor_data->wmi.info[type] + channel);
+	*str = sensor->name;
+
+	return 0;
+}
+
+static umode_t asus_wmi_hwmon_is_visible(const void *drvdata,
+					 enum hwmon_sensor_types type, u32 attr,
+					 int channel)
+{
+	const struct asus_wmi_sensors *sensor_data = drvdata;
+	const struct asus_wmi_sensor_info *sensor;
+
+	sensor = *(sensor_data->wmi.info[type] + channel);
+	if (sensor)
+		return 0444;
+
+	return 0;
+}
+
+static const struct hwmon_ops asus_wmi_hwmon_ops = {
+	.is_visible = asus_wmi_hwmon_is_visible,
+	.read = asus_wmi_hwmon_read,
+	.read_string = asus_wmi_hwmon_read_string,
+};
+
+static struct hwmon_chip_info asus_wmi_chip_info = {
+	.ops = &asus_wmi_hwmon_ops,
+	.info = NULL,
+};
+
+static int asus_wmi_configure_sensor_setup(struct device *dev,
+					   struct asus_wmi_sensors *sensor_data)
+{
+	const struct hwmon_channel_info **ptr_asus_wmi_ci;
+	struct hwmon_channel_info *asus_wmi_hwmon_chan;
+	int nr_count[hwmon_max] = {}, nr_types = 0;
+	struct asus_wmi_sensor_info *temp_sensor;
+	const struct hwmon_chip_info *chip_info;
+	enum hwmon_sensor_types type;
+	struct device *hwdev;
+	int i, idx;
+	int err;
+
+	temp_sensor = devm_kcalloc(dev, 1, sizeof(*temp_sensor), GFP_KERNEL);
+	if (!temp_sensor)
+		return -ENOMEM;
+
+	for (i = 0; i < sensor_data->wmi.sensor_count; i++) {
+		err = asus_wmi_sensor_info(i, temp_sensor);
+		if (err)
+			return err;
+
+		switch (temp_sensor->data_type) {
+		case TEMPERATURE_C:
+		case VOLTAGE:
+		case CURRENT:
+		case FAN_RPM:
+		case WATER_FLOW:
+			type = asus_data_types[temp_sensor->data_type];
+			if (!nr_count[type])
+				nr_types++;
+			nr_count[type]++;
+			break;
+		}
+	}
+
+	if (nr_count[hwmon_temp])
+		nr_count[hwmon_chip]++, nr_types++;
+
+	asus_wmi_hwmon_chan = devm_kcalloc(dev, nr_types,
+					   sizeof(*asus_wmi_hwmon_chan),
+					   GFP_KERNEL);
+	if (!asus_wmi_hwmon_chan)
+		return -ENOMEM;
+
+	ptr_asus_wmi_ci = devm_kcalloc(dev, nr_types + 1,
+				       sizeof(*ptr_asus_wmi_ci), GFP_KERNEL);
+	if (!ptr_asus_wmi_ci)
+		return -ENOMEM;
+
+	asus_wmi_chip_info.info = ptr_asus_wmi_ci;
+	chip_info = &asus_wmi_chip_info;
+
+	sensor_data->wmi.info_by_id = devm_kcalloc(dev, sensor_data->wmi.sensor_count,
+						   sizeof(*sensor_data->wmi.info_by_id),
+						   GFP_KERNEL);
+
+	if (!sensor_data->wmi.info_by_id)
+		return -ENOMEM;
+
+	for (type = 0; type < hwmon_max; type++) {
+		if (!nr_count[type])
+			continue;
+
+		err = asus_wmi_hwmon_add_chan_info(asus_wmi_hwmon_chan, dev,
+						   nr_count[type], type,
+						   hwmon_attributes[type]);
+		if (err)
+			return err;
+
+		*ptr_asus_wmi_ci++ = asus_wmi_hwmon_chan++;
+
+		sensor_data->wmi.info[type] = devm_kcalloc(dev,
+							   nr_count[type],
+							   sizeof(*sensor_data->wmi.info),
+							   GFP_KERNEL);
+		if (!sensor_data->wmi.info[type])
+			return -ENOMEM;
+	}
+
+	for (i = sensor_data->wmi.sensor_count - 1; i >= 0; i--) {
+		temp_sensor = devm_kzalloc(dev, sizeof(*temp_sensor), GFP_KERNEL);
+		if (!temp_sensor)
+			return -ENOMEM;
+
+		err = asus_wmi_sensor_info(i, temp_sensor);
+		if (err)
+			continue;
+
+		switch (temp_sensor->data_type) {
+		case TEMPERATURE_C:
+		case VOLTAGE:
+		case CURRENT:
+		case FAN_RPM:
+		case WATER_FLOW:
+			type = asus_data_types[temp_sensor->data_type];
+			idx = --nr_count[type];
+			*(sensor_data->wmi.info[type] + idx) = temp_sensor;
+			sensor_data->wmi.info_by_id[i] = temp_sensor;
+			break;
+		}
+	}
+
+	dev_dbg(dev, "board has %d sensors",
+		sensor_data->wmi.sensor_count);
+
+	hwdev = devm_hwmon_device_register_with_info(dev, "asus_wmi_sensors",
+						     sensor_data, chip_info, NULL);
+
+	return PTR_ERR_OR_ZERO(hwdev);
+}
+
+static int asus_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+	struct asus_wmi_sensors *sensor_data;
+	struct device *dev = &wdev->dev;
+	u32 version = 0;
+
+	if (!dmi_check_system(asus_wmi_dmi_table))
+		return -ENODEV;
+
+	sensor_data = devm_kzalloc(dev, sizeof(*sensor_data), GFP_KERNEL);
+	if (!sensor_data)
+		return -ENOMEM;
+
+	if (asus_wmi_get_version(&version))
+		return -ENODEV;
+
+	if (asus_wmi_get_item_count(&sensor_data->wmi.sensor_count))
+		return -ENODEV;
+
+	if (sensor_data->wmi.sensor_count  <= 0 || version < 2) {
+		dev_info(dev, "version: %u with %d sensors is unsupported\n",
+			 version, sensor_data->wmi.sensor_count);
+
+		return -ENODEV;
+	}
+
+	mutex_init(&sensor_data->lock);
+
+	dev_set_drvdata(dev, sensor_data);
+
+	return asus_wmi_configure_sensor_setup(dev, sensor_data);
+}
+
+static const struct wmi_device_id asus_wmi_id_table[] = {
+	{ ASUSWMI_MONITORING_GUID, NULL },
+	{ }
+};
+
+static struct wmi_driver asus_sensors_wmi_driver = {
+	.driver = {
+		.name = "asus_wmi_sensors",
+	},
+	.id_table = asus_wmi_id_table,
+	.probe = asus_wmi_probe,
+};
+module_wmi_driver(asus_sensors_wmi_driver);
+
+MODULE_AUTHOR("Ed Brindley <kernel@maidavale.org>");
+MODULE_DESCRIPTION("Asus WMI Sensors Driver");
+MODULE_LICENSE("GPL");

drivers/hwmon/dell-smm-hwmon.c

@@ -113,12 +113,12 @@ MODULE_PARM_DESC(fan_max, "Maximum configurable fan speed (default: autodetect)"
 
 struct smm_regs {
 	unsigned int eax;
-	unsigned int ebx __packed;
-	unsigned int ecx __packed;
-	unsigned int edx __packed;
-	unsigned int esi __packed;
-	unsigned int edi __packed;
-};
+	unsigned int ebx;
+	unsigned int ecx;
+	unsigned int edx;
+	unsigned int esi;
+	unsigned int edi;
+} __packed;
 
 static const char * const temp_labels[] = {
 	"CPU",
@@ -449,13 +449,12 @@ static int i8k_get_power_status(void)
  * Procfs interface
  */
 
-static int
-i8k_ioctl_unlocked(struct file *fp, struct dell_smm_data *data, unsigned int cmd, unsigned long arg)
+static long i8k_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
 {
-	int val = 0;
-	int speed, err;
-	unsigned char buff[16];
+	struct dell_smm_data *data = PDE_DATA(file_inode(fp));
 	int __user *argp = (int __user *)arg;
+	int speed, err;
+	int val = 0;
 
 	if (!argp)
 		return -EINVAL;
@@ -468,15 +467,19 @@ i8k_ioctl_unlocked(struct file *fp, struct dell_smm_data *data, unsigned int cmd
 
 		val = (data->bios_version[0] << 16) |
 				(data->bios_version[1] << 8) | data->bios_version[2];
-		break;
 
+		if (copy_to_user(argp, &val, sizeof(val)))
+			return -EFAULT;
+
+		return 0;
 	case I8K_MACHINE_ID:
 		if (restricted && !capable(CAP_SYS_ADMIN))
 			return -EPERM;
 
-		strscpy_pad(buff, data->bios_machineid, sizeof(buff));
-		break;
+		if (copy_to_user(argp, data->bios_machineid, sizeof(data->bios_machineid)))
+			return -EFAULT;
 
+		return 0;
 	case I8K_FN_STATUS:
 		val = i8k_get_fn_status();
 		break;
@@ -513,11 +516,13 @@ i8k_ioctl_unlocked(struct file *fp, struct dell_smm_data *data, unsigned int cmd
 		if (copy_from_user(&speed, argp + 1, sizeof(int)))
 			return -EFAULT;
 
+		mutex_lock(&data->i8k_mutex);
 		err = i8k_set_fan(data, val, speed);
 		if (err < 0)
-			return err;
-
-		val = i8k_get_fan_status(data, val);
+			val = err;
+		else
+			val = i8k_get_fan_status(data, val);
+		mutex_unlock(&data->i8k_mutex);
 		break;
 
 	default:
@@ -527,39 +532,12 @@ i8k_ioctl_unlocked(struct file *fp, struct dell_smm_data *data, unsigned int cmd
 	if (val < 0)
 		return val;
 
-	switch (cmd) {
-	case I8K_BIOS_VERSION:
-		if (copy_to_user(argp, &val, 4))
-			return -EFAULT;
-
-		break;
-	case I8K_MACHINE_ID:
-		if (copy_to_user(argp, buff, 16))
-			return -EFAULT;
-
-		break;
-	default:
-		if (copy_to_user(argp, &val, sizeof(int)))
-			return -EFAULT;
-
-		break;
-	}
+	if (copy_to_user(argp, &val, sizeof(int)))
+		return -EFAULT;
 
 	return 0;
 }
 
-static long i8k_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
-{
-	struct dell_smm_data *data = PDE_DATA(file_inode(fp));
-	long ret;
-
-	mutex_lock(&data->i8k_mutex);
-	ret = i8k_ioctl_unlocked(fp, data, cmd, arg);
-	mutex_unlock(&data->i8k_mutex);
-
-	return ret;
-}
-
 /*
  * Print the information for /proc/i8k.
  */

drivers/hwmon/f71882fg.c

@@ -49,6 +49,7 @@
 #define SIO_F81768D_ID		0x1210	/* Chipset ID */
 #define SIO_F81865_ID		0x0704	/* Chipset ID */
 #define SIO_F81866_ID		0x1010	/* Chipset ID */
+#define SIO_F81966_ID		0x1502	/* Chipset ID */
 
 #define REGION_LENGTH		8
 #define ADDR_REG_OFFSET		5
@@ -2672,6 +2673,7 @@ static int __init f71882fg_find(int sioaddr, struct f71882fg_sio_data *sio_data)
 		sio_data->type = f81865f;
 		break;
 	case SIO_F81866_ID:
+	case SIO_F81966_ID:
 		sio_data->type = f81866a;
 		break;
 	default:

drivers/hwmon/ina238.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Driver for Texas Instruments INA238 power monitor chip
+ * Datasheet: https://www.ti.com/product/ina238
+ *
+ * Copyright (C) 2021 Nathan Rossi <nathan.rossi@digi.com>
+ */
+
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include <linux/platform_data/ina2xx.h>
+
+/* INA238 register definitions */
+#define INA238_CONFIG			0x0
+#define INA238_ADC_CONFIG		0x1
+#define INA238_SHUNT_CALIBRATION	0x2
+#define INA238_SHUNT_VOLTAGE		0x4
+#define INA238_BUS_VOLTAGE		0x5
+#define INA238_DIE_TEMP			0x6
+#define INA238_CURRENT			0x7
+#define INA238_POWER			0x8
+#define INA238_DIAG_ALERT		0xb
+#define INA238_SHUNT_OVER_VOLTAGE	0xc
+#define INA238_SHUNT_UNDER_VOLTAGE	0xd
+#define INA238_BUS_OVER_VOLTAGE		0xe
+#define INA238_BUS_UNDER_VOLTAGE	0xf
+#define INA238_TEMP_LIMIT		0x10
+#define INA238_POWER_LIMIT		0x11
+#define INA238_DEVICE_ID		0x3f
+
+#define INA238_CONFIG_ADCRANGE		BIT(4)
+
+#define INA238_DIAG_ALERT_TMPOL		BIT(7)
+#define INA238_DIAG_ALERT_SHNTOL	BIT(6)
+#define INA238_DIAG_ALERT_SHNTUL	BIT(5)
+#define INA238_DIAG_ALERT_BUSOL		BIT(4)
+#define INA238_DIAG_ALERT_BUSUL		BIT(3)
+#define INA238_DIAG_ALERT_POL		BIT(2)
+
+#define INA238_REGISTERS		0x11
+
+#define INA238_RSHUNT_DEFAULT		10000 /* uOhm */
+
+/* Default configuration of device on reset. */
+#define INA238_CONFIG_DEFAULT		0
+/* 16 sample averaging, 1052us conversion time, continuous mode */
+#define INA238_ADC_CONFIG_DEFAULT	0xfb6a
+/* Configure alerts to be based on averaged value (SLOWALERT) */
+#define INA238_DIAG_ALERT_DEFAULT	0x2000
+/*
+ * This driver uses a fixed calibration value in order to scale current/power
+ * based on a fixed shunt resistor value. This allows for conversion within the
+ * device to avoid integer limits whilst current/power accuracy is scaled
+ * relative to the shunt resistor value within the driver. This is similar to
+ * how the ina2xx driver handles current/power scaling.
+ *
+ * The end result of this is that increasing shunt values (from a fixed 20 mOhm
+ * shunt) increase the effective current/power accuracy whilst limiting the
+ * range and decreasing shunt values decrease the effective accuracy but
+ * increase the range.
+ *
+ * The value of the Current register is calculated given the following:
+ *   Current (A) = (shunt voltage register * 5) * calibration / 81920
+ *
+ * The maximum shunt voltage is 163.835 mV (0x7fff, ADC_RANGE = 0, gain = 4).
+ * With the maximum current value of 0x7fff and a fixed shunt value results in
+ * a calibration value of 16384 (0x4000).
+ *
+ *   0x7fff = (0x7fff * 5) * calibration / 81920
+ *   calibration = 0x4000
+ *
+ * Equivalent calibration is applied for the Power register (maximum value for
+ * bus voltage is 102396.875 mV, 0x7fff), where the maximum power that can
+ * occur is ~16776192 uW (register value 0x147a8):
+ *
+ * This scaling means the resulting values for Current and Power registers need
+ * to be scaled by the difference between the fixed shunt resistor and the
+ * actual shunt resistor:
+ *
+ *  shunt = 0x4000 / (819.2 * 10^6) / 0.001 = 20000 uOhms (with 1mA/lsb)
+ *
+ *  Current (mA) = register value * 20000 / rshunt / 4 * gain
+ *  Power (W) = 0.2 * register value * 20000 / rshunt / 4 * gain
+ */
+#define INA238_CALIBRATION_VALUE	16384
+#define INA238_FIXED_SHUNT		20000
+
+#define INA238_SHUNT_VOLTAGE_LSB	5 /* 5 uV/lsb */
+#define INA238_BUS_VOLTAGE_LSB		3125 /* 3.125 mV/lsb */
+#define INA238_DIE_TEMP_LSB		125 /* 125 mC/lsb */
+
+static struct regmap_config ina238_regmap_config = {
+	.max_register = INA238_REGISTERS,
+	.reg_bits = 8,
+	.val_bits = 16,
+};
+
+struct ina238_data {
+	struct i2c_client *client;
+	struct mutex config_lock;
+	struct regmap *regmap;
+	u32 rshunt;
+	int gain;
+};
+
+static int ina238_read_reg24(const struct i2c_client *client, u8 reg, u32 *val)
+{
+	u8 data[3];
+	int err;
+
+	/* 24-bit register read */
+	err = i2c_smbus_read_i2c_block_data(client, reg, 3, data);
+	if (err < 0)
+		return err;
+	if (err != 3)
+		return -EIO;
+	*val = (data[0] << 16) | (data[1] << 8) | data[2];
+
+	return 0;
+}
+
+static int ina238_read_in(struct device *dev, u32 attr, int channel,
+			  long *val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	int reg, mask;
+	int regval;
+	int err;
+
+	switch (channel) {
+	case 0:
+		switch (attr) {
+		case hwmon_in_input:
+			reg = INA238_SHUNT_VOLTAGE;
+			break;
+		case hwmon_in_max:
+			reg = INA238_SHUNT_OVER_VOLTAGE;
+			break;
+		case hwmon_in_min:
+			reg = INA238_SHUNT_UNDER_VOLTAGE;
+			break;
+		case hwmon_in_max_alarm:
+			reg = INA238_DIAG_ALERT;
+			mask = INA238_DIAG_ALERT_SHNTOL;
+			break;
+		case hwmon_in_min_alarm:
+			reg = INA238_DIAG_ALERT;
+			mask = INA238_DIAG_ALERT_SHNTUL;
+			break;
+		default:
+			return -EOPNOTSUPP;
+		}
+		break;
+	case 1:
+		switch (attr) {
+		case hwmon_in_input:
+			reg = INA238_BUS_VOLTAGE;
+			break;
+		case hwmon_in_max:
+			reg = INA238_BUS_OVER_VOLTAGE;
+			break;
+		case hwmon_in_min:
+			reg = INA238_BUS_UNDER_VOLTAGE;
+			break;
+		case hwmon_in_max_alarm:
+			reg = INA238_DIAG_ALERT;
+			mask = INA238_DIAG_ALERT_BUSOL;
+			break;
+		case hwmon_in_min_alarm:
+			reg = INA238_DIAG_ALERT;
+			mask = INA238_DIAG_ALERT_BUSUL;
+			break;
+		default:
+			return -EOPNOTSUPP;
+		}
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	err = regmap_read(data->regmap, reg, &regval);
+	if (err < 0)
+		return err;
+
+	switch (attr) {
+	case hwmon_in_input:
+	case hwmon_in_max:
+	case hwmon_in_min:
+		/* signed register, value in mV */
+		regval = (s16)regval;
+		if (channel == 0)
+			/* gain of 1 -> LSB / 4 */
+			*val = (regval * INA238_SHUNT_VOLTAGE_LSB) /
+			       (1000 * (4 - data->gain + 1));
+		else
+			*val = (regval * INA238_BUS_VOLTAGE_LSB) / 1000;
+		break;
+	case hwmon_in_max_alarm:
+	case hwmon_in_min_alarm:
+		*val = !!(regval & mask);
+		break;
+	}
+
+	return 0;
+}
+
+static int ina238_write_in(struct device *dev, u32 attr, int channel,
+			   long val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	int regval;
+
+	if (attr != hwmon_in_max && attr != hwmon_in_min)
+		return -EOPNOTSUPP;
+
+	/* convert decimal to register value */
+	switch (channel) {
+	case 0:
+		/* signed value, clamp to max range +/-163 mV */
+		regval = clamp_val(val, -163, 163);
+		regval = (regval * 1000 * (4 - data->gain + 1)) /
+			 INA238_SHUNT_VOLTAGE_LSB;
+		regval = clamp_val(regval, S16_MIN, S16_MAX);
+
+		switch (attr) {
+		case hwmon_in_max:
+			return regmap_write(data->regmap,
+					    INA238_SHUNT_OVER_VOLTAGE, regval);
+		case hwmon_in_min:
+			return regmap_write(data->regmap,
+					    INA238_SHUNT_UNDER_VOLTAGE, regval);
+		default:
+			return -EOPNOTSUPP;
+		}
+	case 1:
+		/* signed value, positive values only. Clamp to max 102.396 V */
+		regval = clamp_val(val, 0, 102396);
+		regval = (regval * 1000) / INA238_BUS_VOLTAGE_LSB;
+		regval = clamp_val(regval, 0, S16_MAX);
+
+		switch (attr) {
+		case hwmon_in_max:
+			return regmap_write(data->regmap,
+					    INA238_BUS_OVER_VOLTAGE, regval);
+		case hwmon_in_min:
+			return regmap_write(data->regmap,
+					    INA238_BUS_UNDER_VOLTAGE, regval);
+		default:
+			return -EOPNOTSUPP;
+		}
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int ina238_read_current(struct device *dev, u32 attr, long *val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	int regval;
+	int err;
+
+	switch (attr) {
+	case hwmon_curr_input:
+		err = regmap_read(data->regmap, INA238_CURRENT, &regval);
+		if (err < 0)
+			return err;
+
+		/* Signed register, fixed 1mA current lsb. result in mA */
+		*val = div_s64((s16)regval * INA238_FIXED_SHUNT * data->gain,
+			       data->rshunt * 4);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int ina238_read_power(struct device *dev, u32 attr, long *val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	long long power;
+	int regval;
+	int err;
+
+	switch (attr) {
+	case hwmon_power_input:
+		err = ina238_read_reg24(data->client, INA238_POWER, &regval);
+		if (err)
+			return err;
+
+		/* Fixed 1mA lsb, scaled by 1000000 to have result in uW */
+		power = div_u64(regval * 1000ULL * INA238_FIXED_SHUNT *
+				data->gain, 20 * data->rshunt);
+		/* Clamp value to maximum value of long */
+		*val = clamp_val(power, 0, LONG_MAX);
+		break;
+	case hwmon_power_max:
+		err = regmap_read(data->regmap, INA238_POWER_LIMIT, &regval);
+		if (err)
+			return err;
+
+		/*
+		 * Truncated 24-bit compare register, lower 8-bits are
+		 * truncated. Same conversion to/from uW as POWER register.
+		 */
+		power = div_u64((regval << 8) * 1000ULL * INA238_FIXED_SHUNT *
+			       data->gain, 20 * data->rshunt);
+		/* Clamp value to maximum value of long */
+		*val = clamp_val(power, 0, LONG_MAX);
+		break;
+	case hwmon_power_max_alarm:
+		err = regmap_read(data->regmap, INA238_DIAG_ALERT, &regval);
+		if (err)
+			return err;
+
+		*val = !!(regval & INA238_DIAG_ALERT_POL);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int ina238_write_power(struct device *dev, u32 attr, long val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	long regval;
+
+	if (attr != hwmon_power_max)
+		return -EOPNOTSUPP;
+
+	/*
+	 * Unsigned postive values. Compared against the 24-bit power register,
+	 * lower 8-bits are truncated. Same conversion to/from uW as POWER
+	 * register.
+	 */
+	regval = clamp_val(val, 0, LONG_MAX);
+	regval = div_u64(val * 20ULL * data->rshunt,
+			 1000ULL * INA238_FIXED_SHUNT * data->gain);
+	regval = clamp_val(regval >> 8, 0, U16_MAX);
+
+	return regmap_write(data->regmap, INA238_POWER_LIMIT, regval);
+}
+
+static int ina238_read_temp(struct device *dev, u32 attr, long *val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	int regval;
+	int err;
+
+	switch (attr) {
+	case hwmon_temp_input:
+		err = regmap_read(data->regmap, INA238_DIE_TEMP, &regval);
+		if (err)
+			return err;
+
+		/* Signed, bits 15-4 of register, result in mC */
+		*val = ((s16)regval >> 4) * INA238_DIE_TEMP_LSB;
+		break;
+	case hwmon_temp_max:
+		err = regmap_read(data->regmap, INA238_TEMP_LIMIT, &regval);
+		if (err)
+			return err;
+
+		/* Signed, bits 15-4 of register, result in mC */
+		*val = ((s16)regval >> 4) * INA238_DIE_TEMP_LSB;
+		break;
+	case hwmon_temp_max_alarm:
+		err = regmap_read(data->regmap, INA238_DIAG_ALERT, &regval);
+		if (err)
+			return err;
+
+		*val = !!(regval & INA238_DIAG_ALERT_TMPOL);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int ina238_write_temp(struct device *dev, u32 attr, long val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	int regval;
+
+	if (attr != hwmon_temp_max)
+		return -EOPNOTSUPP;
+
+	/* Signed, bits 15-4 of register */
+	regval = (val / INA238_DIE_TEMP_LSB) << 4;
+	regval = clamp_val(regval, S16_MIN, S16_MAX) & 0xfff0;
+
+	return regmap_write(data->regmap, INA238_TEMP_LIMIT, regval);
+}
+
+static int ina238_read(struct device *dev, enum hwmon_sensor_types type,
+		       u32 attr, int channel, long *val)
+{
+	switch (type) {
+	case hwmon_in:
+		return ina238_read_in(dev, attr, channel, val);
+	case hwmon_curr:
+		return ina238_read_current(dev, attr, val);
+	case hwmon_power:
+		return ina238_read_power(dev, attr, val);
+	case hwmon_temp:
+		return ina238_read_temp(dev, attr, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+static int ina238_write(struct device *dev, enum hwmon_sensor_types type,
+		       u32 attr, int channel, long val)
+{
+	struct ina238_data *data = dev_get_drvdata(dev);
+	int err;
+
+	mutex_lock(&data->config_lock);
+
+	switch (type) {
+	case hwmon_in:
+		err = ina238_write_in(dev, attr, channel, val);
+		break;
+	case hwmon_power:
+		err = ina238_write_power(dev, attr, val);
+		break;
+	case hwmon_temp:
+		err = ina238_write_temp(dev, attr, val);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	mutex_unlock(&data->config_lock);
+	return err;
+}
+
+static umode_t ina238_is_visible(const void *drvdata,
+				 enum hwmon_sensor_types type,
+				 u32 attr, int channel)
+{
+	switch (type) {
+	case hwmon_in:
+		switch (attr) {
+		case hwmon_in_input:
+		case hwmon_in_max_alarm:
+		case hwmon_in_min_alarm:
+			return 0444;
+		case hwmon_in_max:
+		case hwmon_in_min:
+			return 0644;
+		default:
+			return 0;
+		}
+	case hwmon_curr:
+		switch (attr) {
+		case hwmon_curr_input:
+			return 0444;
+		default:
+			return 0;
+		}
+	case hwmon_power:
+		switch (attr) {
+		case hwmon_power_input:
+		case hwmon_power_max_alarm:
+			return 0444;
+		case hwmon_power_max:
+			return 0644;
+		default:
+			return 0;
+		}
+	case hwmon_temp:
+		switch (attr) {
+		case hwmon_temp_input:
+		case hwmon_temp_max_alarm:
+			return 0444;
+		case hwmon_temp_max:
+			return 0644;
+		default:
+			return 0;
+		}
+	default:
+		return 0;
+	}
+}
+
+#define INA238_HWMON_IN_CONFIG (HWMON_I_INPUT | \
+				HWMON_I_MAX | HWMON_I_MAX_ALARM | \
+				HWMON_I_MIN | HWMON_I_MIN_ALARM)
+
+static const struct hwmon_channel_info *ina238_info[] = {
+	HWMON_CHANNEL_INFO(in,
+			   /* 0: shunt voltage */
+			   INA238_HWMON_IN_CONFIG,
+			   /* 1: bus voltage */
+			   INA238_HWMON_IN_CONFIG),
+	HWMON_CHANNEL_INFO(curr,
+			   /* 0: current through shunt */
+			   HWMON_C_INPUT),
+	HWMON_CHANNEL_INFO(power,
+			   /* 0: power */
+			   HWMON_P_INPUT | HWMON_P_MAX | HWMON_P_MAX_ALARM),
+	HWMON_CHANNEL_INFO(temp,
+			   /* 0: die temperature */
+			   HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_ALARM),
+	NULL
+};
+
+static const struct hwmon_ops ina238_hwmon_ops = {
+	.is_visible = ina238_is_visible,
+	.read = ina238_read,
+	.write = ina238_write,
+};
+
+static const struct hwmon_chip_info ina238_chip_info = {
+	.ops = &ina238_hwmon_ops,
+	.info = ina238_info,
+};
+
+static int ina238_probe(struct i2c_client *client)
+{
+	struct ina2xx_platform_data *pdata = dev_get_platdata(&client->dev);
+	struct device *dev = &client->dev;
+	struct device *hwmon_dev;
+	struct ina238_data *data;
+	int config;
+	int ret;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->client = client;
+	mutex_init(&data->config_lock);
+
+	data->regmap = devm_regmap_init_i2c(client, &ina238_regmap_config);
+	if (IS_ERR(data->regmap)) {
+		dev_err(dev, "failed to allocate register map\n");
+		return PTR_ERR(data->regmap);
+	}
+
+	/* load shunt value */
+	data->rshunt = INA238_RSHUNT_DEFAULT;
+	if (device_property_read_u32(dev, "shunt-resistor", &data->rshunt) < 0 && pdata)
+		data->rshunt = pdata->shunt_uohms;
+	if (data->rshunt == 0) {
+		dev_err(dev, "invalid shunt resister value %u\n", data->rshunt);
+		return -EINVAL;
+	}
+
+	/* load shunt gain value */
+	if (device_property_read_u32(dev, "ti,shunt-gain", &data->gain) < 0)
+		data->gain = 4; /* Default of ADCRANGE = 0 */
+	if (data->gain != 1 && data->gain != 4) {
+		dev_err(dev, "invalid shunt gain value %u\n", data->gain);
+		return -EINVAL;
+	}
+
+	/* Setup CONFIG register */
+	config = INA238_CONFIG_DEFAULT;
+	if (data->gain == 1)
+		config |= INA238_CONFIG_ADCRANGE; /* ADCRANGE = 1 is /1 */
+	ret = regmap_write(data->regmap, INA238_CONFIG, config);
+	if (ret < 0) {
+		dev_err(dev, "error configuring the device: %d\n", ret);
+		return -ENODEV;
+	}
+
+	/* Setup ADC_CONFIG register */
+	ret = regmap_write(data->regmap, INA238_ADC_CONFIG,
+			   INA238_ADC_CONFIG_DEFAULT);
+	if (ret < 0) {
+		dev_err(dev, "error configuring the device: %d\n", ret);
+		return -ENODEV;
+	}
+
+	/* Setup SHUNT_CALIBRATION register with fixed value */
+	ret = regmap_write(data->regmap, INA238_SHUNT_CALIBRATION,
+			   INA238_CALIBRATION_VALUE);
+	if (ret < 0) {
+		dev_err(dev, "error configuring the device: %d\n", ret);
+		return -ENODEV;
+	}
+
+	/* Setup alert/alarm configuration */
+	ret = regmap_write(data->regmap, INA238_DIAG_ALERT,
+			   INA238_DIAG_ALERT_DEFAULT);
+	if (ret < 0) {
+		dev_err(dev, "error configuring the device: %d\n", ret);
+		return -ENODEV;
+	}
+
+	hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,
+							 &ina238_chip_info,
+							 NULL);
+	if (IS_ERR(hwmon_dev))
+		return PTR_ERR(hwmon_dev);
+
+	dev_info(dev, "power monitor %s (Rshunt = %u uOhm, gain = %u)\n",
+		 client->name, data->rshunt, data->gain);
+
+	return 0;
+}
+
+static const struct i2c_device_id ina238_id[] = {
+	{ "ina238", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ina238_id);
+
+static const struct of_device_id __maybe_unused ina238_of_match[] = {
+	{ .compatible = "ti,ina238" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ina238_of_match);
+
+static struct i2c_driver ina238_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "ina238",
+		.of_match_table = of_match_ptr(ina238_of_match),
+	},
+	.probe_new	= ina238_probe,
+	.id_table	= ina238_id,
+};
+
+module_i2c_driver(ina238_driver);
+
+MODULE_AUTHOR("Nathan Rossi <nathan.rossi@digi.com>");
+MODULE_DESCRIPTION("ina238 driver");
+MODULE_LICENSE("GPL");

drivers/hwmon/jc42.c

@@ -137,6 +137,9 @@ static const unsigned short normal_i2c[] = {
 #define CAT34TS04_DEVID		0x2200
 #define CAT34TS04_DEVID_MASK	0xfff0
 
+#define N34TS04_DEVID		0x2230
+#define N34TS04_DEVID_MASK	0xfff0
+
 /* ST Microelectronics */
 #define STTS424_DEVID		0x0101
 #define STTS424_DEVID_MASK	0xffff
@@ -181,6 +184,7 @@ static struct jc42_chips jc42_chips[] = {
 	{ ONS_MANID, CAT6095_DEVID, CAT6095_DEVID_MASK },
 	{ ONS_MANID, CAT34TS02C_DEVID, CAT34TS02C_DEVID_MASK },
 	{ ONS_MANID, CAT34TS04_DEVID, CAT34TS04_DEVID_MASK },
+	{ ONS_MANID, N34TS04_DEVID, N34TS04_DEVID_MASK },
 	{ NXP_MANID, SE98_DEVID, SE98_DEVID_MASK },
 	{ STM_MANID, STTS424_DEVID, STTS424_DEVID_MASK },
 	{ STM_MANID, STTS424E_DEVID, STTS424E_DEVID_MASK },

drivers/hwmon/k10temp.c

@@ -76,26 +76,6 @@ static DEFINE_MUTEX(nb_smu_ind_mutex);
 #define ZEN_CUR_TEMP_SHIFT			21
 #define ZEN_CUR_TEMP_RANGE_SEL_MASK		BIT(19)
 
-#define ZEN_SVI_BASE				0x0005A000
-
-/* F17h thermal registers through SMN */
-#define F17H_M01H_SVI_TEL_PLANE0		(ZEN_SVI_BASE + 0xc)
-#define F17H_M01H_SVI_TEL_PLANE1		(ZEN_SVI_BASE + 0x10)
-#define F17H_M31H_SVI_TEL_PLANE0		(ZEN_SVI_BASE + 0x14)
-#define F17H_M31H_SVI_TEL_PLANE1		(ZEN_SVI_BASE + 0x10)
-
-#define F17H_M01H_CFACTOR_ICORE			1000000	/* 1A / LSB	*/
-#define F17H_M01H_CFACTOR_ISOC			250000	/* 0.25A / LSB	*/
-#define F17H_M31H_CFACTOR_ICORE			1000000	/* 1A / LSB	*/
-#define F17H_M31H_CFACTOR_ISOC			310000	/* 0.31A / LSB	*/
-
-/* F19h thermal registers through SMN */
-#define F19H_M01_SVI_TEL_PLANE0			(ZEN_SVI_BASE + 0x14)
-#define F19H_M01_SVI_TEL_PLANE1			(ZEN_SVI_BASE + 0x10)
-
-#define F19H_M01H_CFACTOR_ICORE			1000000	/* 1A / LSB	*/
-#define F19H_M01H_CFACTOR_ISOC			310000	/* 0.31A / LSB	*/
-
 struct k10temp_data {
 	struct pci_dev *pdev;
 	void (*read_htcreg)(struct pci_dev *pdev, u32 *regval);
@@ -191,6 +171,10 @@ static const char *k10temp_temp_label[] = {
 	"Tccd6",
 	"Tccd7",
 	"Tccd8",
+	"Tccd9",
+	"Tccd10",
+	"Tccd11",
+	"Tccd12",
 };
 
 static int k10temp_read_labels(struct device *dev,
@@ -226,7 +210,7 @@ static int k10temp_read_temp(struct device *dev, u32 attr, int channel,
 			if (*val < 0)
 				*val = 0;
 			break;
-		case 2 ... 9:		/* Tccd{1-8} */
+		case 2 ... 13:		/* Tccd{1-12} */
 			amd_smn_read(amd_pci_dev_to_node_id(data->pdev),
 				     ZEN_CCD_TEMP(data->ccd_offset, channel - 2),
 						  &regval);
@@ -361,6 +345,10 @@ static const struct hwmon_channel_info *k10temp_info[] = {
 			   HWMON_T_INPUT | HWMON_T_LABEL,
 			   HWMON_T_INPUT | HWMON_T_LABEL,
 			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
 			   HWMON_T_INPUT | HWMON_T_LABEL),
 	NULL
 };
@@ -457,6 +445,11 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 			data->ccd_offset = 0x300;
 			k10temp_get_ccd_support(pdev, data, 8);
 			break;
+		case 0x10 ... 0x1f:
+		case 0xa0 ... 0xaf:
+			data->ccd_offset = 0x300;
+			k10temp_get_ccd_support(pdev, data, 12);
+			break;
 		}
 	} else {
 		data->read_htcreg = read_htcreg_pci;
@@ -497,6 +490,7 @@ static const struct pci_device_id k10temp_id_table[] = {
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M60H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_DF_F3) },
+	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M10H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M40H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F3) },
 	{ PCI_VDEVICE(HYGON, PCI_DEVICE_ID_AMD_17H_DF_F3) },

drivers/hwmon/mr75203.c

@@ -93,7 +93,7 @@
 #define VM_CH_REQ	BIT(21)
 
 #define IP_TMR			0x05
-#define POWER_DELAY_CYCLE_256	0x80
+#define POWER_DELAY_CYCLE_256	0x100
 #define POWER_DELAY_CYCLE_64	0x40
 
 #define PVT_POLL_DELAY_US	20

drivers/hwmon/nct6775.c

@@ -3154,10 +3154,8 @@ store_speed_tolerance(struct device *dev, struct device_attribute *attr,
 	if (err < 0)
 		return err;
 
-	high = fan_from_reg16(data->target_speed[nr],
-			      data->fan_div[nr]) + val;
-	low = fan_from_reg16(data->target_speed[nr],
-			     data->fan_div[nr]) - val;
+	high = fan_from_reg16(data->target_speed[nr], data->fan_div[nr]) + val;
+	low = fan_from_reg16(data->target_speed[nr], data->fan_div[nr]) - val;
 	if (low <= 0)
 		low = 1;
 	if (high < low)
@@ -4995,11 +4993,13 @@ static const char * const asus_wmi_boards[] = {
 	"ROG CROSSHAIR VIII FORMULA",
 	"ROG CROSSHAIR VIII HERO",
 	"ROG CROSSHAIR VIII IMPACT",
+	"ROG STRIX B550-A GAMING",
 	"ROG STRIX B550-E GAMING",
 	"ROG STRIX B550-F GAMING",
 	"ROG STRIX B550-F GAMING (WI-FI)",
 	"ROG STRIX B550-I GAMING",
 	"ROG STRIX X570-F GAMING",
+	"ROG STRIX X570-I GAMING",
 	"ROG STRIX Z390-E GAMING",
 	"ROG STRIX Z490-I GAMING",
 	"TUF GAMING B550M-PLUS",
@@ -5038,7 +5038,7 @@ static int __init sensors_nct6775_init(void)
 				   board_name);
 		if (err >= 0) {
 			/* if reading chip id via WMI succeeds, use WMI */
-			if (!nct6775_asuswmi_read(0, NCT6775_PORT_CHIPID, &tmp)) {
+			if (!nct6775_asuswmi_read(0, NCT6775_PORT_CHIPID, &tmp) && tmp) {
 				pr_info("Using Asus WMI to access %#x chip.\n", tmp);
 				access = access_asuswmi;
 			} else {

drivers/hwmon/ntc_thermistor.c

@@ -9,18 +9,23 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/math64.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/err.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/fixp-arith.h>
-
-#include <linux/platform_data/ntc_thermistor.h>
-
 #include <linux/iio/consumer.h>
-
 #include <linux/hwmon.h>
 
+enum ntc_thermistor_type {
+	TYPE_B57330V2103,
+	TYPE_B57891S0103,
+	TYPE_NCPXXWB473,
+	TYPE_NCPXXWF104,
+	TYPE_NCPXXWL333,
+	TYPE_NCPXXXH103,
+};
+
 struct ntc_compensation {
 	int		temp_c;
 	unsigned int	ohm;
@@ -40,6 +45,7 @@ enum {
 	NTC_NCP15XH103,
 	NTC_NCP18WB473,
 	NTC_NCP21WB473,
+	NTC_SSG1404001221,
 	NTC_LAST,
 };
 
@@ -53,6 +59,7 @@ static const struct platform_device_id ntc_thermistor_id[] = {
 	[NTC_NCP15XH103]      = { "ncp15xh103",      TYPE_NCPXXXH103 },
 	[NTC_NCP18WB473]      = { "ncp18wb473",      TYPE_NCPXXWB473 },
 	[NTC_NCP21WB473]      = { "ncp21wb473",      TYPE_NCPXXWB473 },
+	[NTC_SSG1404001221]   = { "ssg1404-001221",  TYPE_NCPXXWB473 },
 	[NTC_LAST]            = { },
 };
 
@@ -313,16 +320,30 @@ static const struct ntc_type ntc_type[] = {
 	NTC_TYPE(TYPE_NCPXXXH103,  ncpXXxh103),
 };
 
+/*
+ * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required.
+ *
+ * How to setup pullup_ohm, pulldown_ohm, and connect is
+ * described at Documentation/hwmon/ntc_thermistor.rst
+ *
+ * pullup/down_ohm: 0 for infinite / not-connected
+ *
+ * chan: iio_channel pointer to communicate with the ADC which the
+ * thermistor is using for conversion of the analog values.
+ */
 struct ntc_data {
-	struct ntc_thermistor_platform_data *pdata;
 	const struct ntc_compensation *comp;
 	int n_comp;
+	unsigned int pullup_uv;
+	unsigned int pullup_ohm;
+	unsigned int pulldown_ohm;
+	enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect;
+	struct iio_channel *chan;
 };
 
-#if defined(CONFIG_OF) && IS_ENABLED(CONFIG_IIO)
-static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
+static int ntc_adc_iio_read(struct ntc_data *data)
 {
-	struct iio_channel *channel = pdata->chan;
+	struct iio_channel *channel = data->chan;
 	int uv, ret;
 
 	ret = iio_read_channel_processed_scale(channel, &uv, 1000);
@@ -342,103 +363,13 @@ static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
 		ret = iio_convert_raw_to_processed(channel, raw, &uv, 1000);
 		if (ret < 0) {
 			/* Assume 12 bit ADC with vref at pullup_uv */
-			uv = (pdata->pullup_uv * (s64)raw) >> 12;
+			uv = (data->pullup_uv * (s64)raw) >> 12;
 		}
 	}
 
 	return uv;
 }
 
-static const struct of_device_id ntc_match[] = {
-	{ .compatible = "epcos,b57330v2103",
-		.data = &ntc_thermistor_id[NTC_B57330V2103]},
-	{ .compatible = "epcos,b57891s0103",
-		.data = &ntc_thermistor_id[NTC_B57891S0103] },
-	{ .compatible = "murata,ncp03wb473",
-		.data = &ntc_thermistor_id[NTC_NCP03WB473] },
-	{ .compatible = "murata,ncp03wf104",
-		.data = &ntc_thermistor_id[NTC_NCP03WF104] },
-	{ .compatible = "murata,ncp15wb473",
-		.data = &ntc_thermistor_id[NTC_NCP15WB473] },
-	{ .compatible = "murata,ncp15wl333",
-		.data = &ntc_thermistor_id[NTC_NCP15WL333] },
-	{ .compatible = "murata,ncp15xh103",
-		.data = &ntc_thermistor_id[NTC_NCP15XH103] },
-	{ .compatible = "murata,ncp18wb473",
-		.data = &ntc_thermistor_id[NTC_NCP18WB473] },
-	{ .compatible = "murata,ncp21wb473",
-		.data = &ntc_thermistor_id[NTC_NCP21WB473] },
-
-	/* Usage of vendor name "ntc" is deprecated */
-	{ .compatible = "ntc,ncp03wb473",
-		.data = &ntc_thermistor_id[NTC_NCP03WB473] },
-	{ .compatible = "ntc,ncp15wb473",
-		.data = &ntc_thermistor_id[NTC_NCP15WB473] },
-	{ .compatible = "ntc,ncp15wl333",
-		.data = &ntc_thermistor_id[NTC_NCP15WL333] },
-	{ .compatible = "ntc,ncp18wb473",
-		.data = &ntc_thermistor_id[NTC_NCP18WB473] },
-	{ .compatible = "ntc,ncp21wb473",
-		.data = &ntc_thermistor_id[NTC_NCP21WB473] },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, ntc_match);
-
-static struct ntc_thermistor_platform_data *
-ntc_thermistor_parse_dt(struct device *dev)
-{
-	struct iio_channel *chan;
-	enum iio_chan_type type;
-	struct device_node *np = dev->of_node;
-	struct ntc_thermistor_platform_data *pdata;
-	int ret;
-
-	if (!np)
-		return NULL;
-
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata)
-		return ERR_PTR(-ENOMEM);
-
-	chan = devm_iio_channel_get(dev, NULL);
-	if (IS_ERR(chan))
-		return ERR_CAST(chan);
-
-	ret = iio_get_channel_type(chan, &type);
-	if (ret < 0)
-		return ERR_PTR(ret);
-
-	if (type != IIO_VOLTAGE)
-		return ERR_PTR(-EINVAL);
-
-	if (of_property_read_u32(np, "pullup-uv", &pdata->pullup_uv))
-		return ERR_PTR(-ENODEV);
-	if (of_property_read_u32(np, "pullup-ohm", &pdata->pullup_ohm))
-		return ERR_PTR(-ENODEV);
-	if (of_property_read_u32(np, "pulldown-ohm", &pdata->pulldown_ohm))
-		return ERR_PTR(-ENODEV);
-
-	if (of_find_property(np, "connected-positive", NULL))
-		pdata->connect = NTC_CONNECTED_POSITIVE;
-	else /* status change should be possible if not always on. */
-		pdata->connect = NTC_CONNECTED_GROUND;
-
-	pdata->chan = chan;
-	pdata->read_uv = ntc_adc_iio_read;
-
-	return pdata;
-}
-#else
-static struct ntc_thermistor_platform_data *
-ntc_thermistor_parse_dt(struct device *dev)
-{
-	return NULL;
-}
-
-#define ntc_match	NULL
-
-#endif
-
 static inline u64 div64_u64_safe(u64 dividend, u64 divisor)
 {
 	if (divisor == 0 && dividend == 0)
@@ -450,24 +381,23 @@ static inline u64 div64_u64_safe(u64 dividend, u64 divisor)
 
 static int get_ohm_of_thermistor(struct ntc_data *data, unsigned int uv)
 {
-	struct ntc_thermistor_platform_data *pdata = data->pdata;
-	u32 puv = pdata->pullup_uv;
+	u32 puv = data->pullup_uv;
 	u64 n, puo, pdo;
-	puo = pdata->pullup_ohm;
-	pdo = pdata->pulldown_ohm;
+	puo = data->pullup_ohm;
+	pdo = data->pulldown_ohm;
 
 	if (uv == 0)
-		return (pdata->connect == NTC_CONNECTED_POSITIVE) ?
+		return (data->connect == NTC_CONNECTED_POSITIVE) ?
 			INT_MAX : 0;
 	if (uv >= puv)
-		return (pdata->connect == NTC_CONNECTED_POSITIVE) ?
+		return (data->connect == NTC_CONNECTED_POSITIVE) ?
 			0 : INT_MAX;
 
-	if (pdata->connect == NTC_CONNECTED_POSITIVE && puo == 0)
+	if (data->connect == NTC_CONNECTED_POSITIVE && puo == 0)
 		n = div_u64(pdo * (puv - uv), uv);
-	else if (pdata->connect == NTC_CONNECTED_GROUND && pdo == 0)
+	else if (data->connect == NTC_CONNECTED_GROUND && pdo == 0)
 		n = div_u64(puo * uv, puv - uv);
-	else if (pdata->connect == NTC_CONNECTED_POSITIVE)
+	else if (data->connect == NTC_CONNECTED_POSITIVE)
 		n = div64_u64_safe(pdo * puo * (puv - uv),
 				puo * uv - pdo * (puv - uv));
 	else
@@ -567,16 +497,10 @@ static int ntc_thermistor_get_ohm(struct ntc_data *data)
 {
 	int read_uv;
 
-	if (data->pdata->read_ohm)
-		return data->pdata->read_ohm();
-
-	if (data->pdata->read_uv) {
-		read_uv = data->pdata->read_uv(data->pdata);
-		if (read_uv < 0)
-			return read_uv;
-		return get_ohm_of_thermistor(data, read_uv);
-	}
-	return -EINVAL;
+	read_uv = ntc_adc_iio_read(data);
+	if (read_uv < 0)
+		return read_uv;
+	return get_ohm_of_thermistor(data, read_uv);
 }
 
 static int ntc_read(struct device *dev, enum hwmon_sensor_types type,
@@ -638,58 +562,74 @@ static const struct hwmon_chip_info ntc_chip_info = {
 	.info = ntc_info,
 };
 
-static int ntc_thermistor_probe(struct platform_device *pdev)
+static int ntc_thermistor_parse_props(struct device *dev,
+				      struct ntc_data *data)
 {
-	struct device *dev = &pdev->dev;
-	const struct of_device_id *of_id =
-			of_match_device(of_match_ptr(ntc_match), dev);
-	const struct platform_device_id *pdev_id;
-	struct ntc_thermistor_platform_data *pdata;
-	struct device *hwmon_dev;
-	struct ntc_data *data;
+	struct iio_channel *chan;
+	enum iio_chan_type type;
+	int ret;
 
-	pdata = ntc_thermistor_parse_dt(dev);
-	if (IS_ERR(pdata))
-		return PTR_ERR(pdata);
-	else if (pdata == NULL)
-		pdata = dev_get_platdata(dev);
+	chan = devm_iio_channel_get(dev, NULL);
+	if (IS_ERR(chan))
+		return PTR_ERR(chan);
 
-	if (!pdata) {
-		dev_err(dev, "No platform init data supplied.\n");
-		return -ENODEV;
-	}
+	ret = iio_get_channel_type(chan, &type);
+	if (ret < 0)
+		return ret;
 
-	/* Either one of the two is required. */
-	if (!pdata->read_uv && !pdata->read_ohm) {
-		dev_err(dev,
-			"Both read_uv and read_ohm missing. Need either one of the two.\n");
+	if (type != IIO_VOLTAGE)
 		return -EINVAL;
-	}
 
-	if (pdata->read_uv && pdata->read_ohm) {
-		dev_warn(dev,
-			 "Only one of read_uv and read_ohm is needed; ignoring read_uv.\n");
-		pdata->read_uv = NULL;
-	}
+	ret = device_property_read_u32(dev, "pullup-uv", &data->pullup_uv);
+	if (ret)
+		return dev_err_probe(dev,  ret, "pullup-uv not specified\n");
 
-	if (pdata->read_uv && (pdata->pullup_uv == 0 ||
-				(pdata->pullup_ohm == 0 && pdata->connect ==
-				 NTC_CONNECTED_GROUND) ||
-				(pdata->pulldown_ohm == 0 && pdata->connect ==
-				 NTC_CONNECTED_POSITIVE) ||
-				(pdata->connect != NTC_CONNECTED_POSITIVE &&
-				 pdata->connect != NTC_CONNECTED_GROUND))) {
-		dev_err(dev, "Required data to use read_uv not supplied.\n");
-		return -EINVAL;
-	}
+	ret = device_property_read_u32(dev, "pullup-ohm", &data->pullup_ohm);
+	if (ret)
+		return dev_err_probe(dev,  ret, "pullup-ohm not specified\n");
+
+	ret = device_property_read_u32(dev, "pulldown-ohm", &data->pulldown_ohm);
+	if (ret)
+		return dev_err_probe(dev,  ret, "pulldown-ohm not specified\n");
+
+	if (device_property_read_bool(dev, "connected-positive"))
+		data->connect = NTC_CONNECTED_POSITIVE;
+	else /* status change should be possible if not always on. */
+		data->connect = NTC_CONNECTED_GROUND;
+
+	data->chan = chan;
+
+	return 0;
+}
 
-	data = devm_kzalloc(dev, sizeof(struct ntc_data), GFP_KERNEL);
+static int ntc_thermistor_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	const struct platform_device_id *pdev_id;
+	struct device *hwmon_dev;
+	struct ntc_data *data;
+	int ret;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
 
-	pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
+	ret = ntc_thermistor_parse_props(dev, data);
+	if (ret)
+		return ret;
+
+	if (data->pullup_uv == 0 ||
+	    (data->pullup_ohm == 0 && data->connect ==
+	     NTC_CONNECTED_GROUND) ||
+	    (data->pulldown_ohm == 0 && data->connect ==
+	     NTC_CONNECTED_POSITIVE) ||
+	    (data->connect != NTC_CONNECTED_POSITIVE &&
+	     data->connect != NTC_CONNECTED_GROUND)) {
+		dev_err(dev, "Required data to use NTC driver not supplied.\n");
+		return -EINVAL;
+	}
 
-	data->pdata = pdata;
+	pdev_id = device_get_match_data(dev);
 
 	if (pdev_id->driver_data >= ARRAY_SIZE(ntc_type)) {
 		dev_err(dev, "Unknown device type: %lu(%s)\n",
@@ -714,10 +654,47 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct of_device_id ntc_match[] = {
+	{ .compatible = "epcos,b57330v2103",
+		.data = &ntc_thermistor_id[NTC_B57330V2103]},
+	{ .compatible = "epcos,b57891s0103",
+		.data = &ntc_thermistor_id[NTC_B57891S0103] },
+	{ .compatible = "murata,ncp03wb473",
+		.data = &ntc_thermistor_id[NTC_NCP03WB473] },
+	{ .compatible = "murata,ncp03wf104",
+		.data = &ntc_thermistor_id[NTC_NCP03WF104] },
+	{ .compatible = "murata,ncp15wb473",
+		.data = &ntc_thermistor_id[NTC_NCP15WB473] },
+	{ .compatible = "murata,ncp15wl333",
+		.data = &ntc_thermistor_id[NTC_NCP15WL333] },
+	{ .compatible = "murata,ncp15xh103",
+		.data = &ntc_thermistor_id[NTC_NCP15XH103] },
+	{ .compatible = "murata,ncp18wb473",
+		.data = &ntc_thermistor_id[NTC_NCP18WB473] },
+	{ .compatible = "murata,ncp21wb473",
+		.data = &ntc_thermistor_id[NTC_NCP21WB473] },
+	{ .compatible = "samsung,1404-001221",
+		.data = &ntc_thermistor_id[NTC_SSG1404001221] },
+
+	/* Usage of vendor name "ntc" is deprecated */
+	{ .compatible = "ntc,ncp03wb473",
+		.data = &ntc_thermistor_id[NTC_NCP03WB473] },
+	{ .compatible = "ntc,ncp15wb473",
+		.data = &ntc_thermistor_id[NTC_NCP15WB473] },
+	{ .compatible = "ntc,ncp15wl333",
+		.data = &ntc_thermistor_id[NTC_NCP15WL333] },
+	{ .compatible = "ntc,ncp18wb473",
+		.data = &ntc_thermistor_id[NTC_NCP18WB473] },
+	{ .compatible = "ntc,ncp21wb473",
+		.data = &ntc_thermistor_id[NTC_NCP21WB473] },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ntc_match);
+
 static struct platform_driver ntc_thermistor_driver = {
 	.driver = {
 		.name = "ntc-thermistor",
-		.of_match_table = of_match_ptr(ntc_match),
+		.of_match_table = ntc_match,
 	},
 	.probe = ntc_thermistor_probe,
 	.id_table = ntc_thermistor_id,

drivers/hwmon/nzxt-smart2.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Reverse-engineered NZXT RGB & Fan Controller/Smart Device v2 driver.
+ *
+ * Copyright (c) 2021 Aleksandr Mezin
+ */
+
+#include <linux/hid.h>
+#include <linux/hwmon.h>
+#include <linux/math.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+
+/*
+ * The device has only 3 fan channels/connectors. But all HID reports have
+ * space reserved for up to 8 channels.
+ */
+#define FAN_CHANNELS 3
+#define FAN_CHANNELS_MAX 8
+
+#define UPDATE_INTERVAL_DEFAULT_MS 1000
+
+/* These strings match labels on the device exactly */
+static const char *const fan_label[] = {
+	"FAN 1",
+	"FAN 2",
+	"FAN 3",
+};
+
+static const char *const curr_label[] = {
+	"FAN 1 Current",
+	"FAN 2 Current",
+	"FAN 3 Current",
+};
+
+static const char *const in_label[] = {
+	"FAN 1 Voltage",
+	"FAN 2 Voltage",
+	"FAN 3 Voltage",
+};
+
+enum {
+	INPUT_REPORT_ID_FAN_CONFIG = 0x61,
+	INPUT_REPORT_ID_FAN_STATUS = 0x67,
+};
+
+enum {
+	FAN_STATUS_REPORT_SPEED = 0x02,
+	FAN_STATUS_REPORT_VOLTAGE = 0x04,
+};
+
+enum {
+	FAN_TYPE_NONE = 0,
+	FAN_TYPE_DC = 1,
+	FAN_TYPE_PWM = 2,
+};
+
+struct unknown_static_data {
+	/*
+	 * Some configuration data? Stays the same after fan speed changes,
+	 * changes in fan configuration, reboots and driver reloads.
+	 *
+	 * The same data in multiple report types.
+	 *
+	 * Byte 12 seems to be the number of fan channels, but I am not sure.
+	 */
+	u8 unknown1[14];
+} __packed;
+
+/*
+ * The device sends this input report in response to "detect fans" command:
+ * a 2-byte output report { 0x60, 0x03 }.
+ */
+struct fan_config_report {
+	/* report_id should be INPUT_REPORT_ID_FAN_CONFIG = 0x61 */
+	u8 report_id;
+	/* Always 0x03 */
+	u8 magic;
+	struct unknown_static_data unknown_data;
+	/* Fan type as detected by the device. See FAN_TYPE_* enum. */
+	u8 fan_type[FAN_CHANNELS_MAX];
+} __packed;
+
+/*
+ * The device sends these reports at a fixed interval (update interval) -
+ * one report with type = FAN_STATUS_REPORT_SPEED, and one report with type =
+ * FAN_STATUS_REPORT_VOLTAGE per update interval.
+ */
+struct fan_status_report {
+	/* report_id should be INPUT_REPORT_ID_STATUS = 0x67 */
+	u8 report_id;
+	/* FAN_STATUS_REPORT_SPEED = 0x02 or FAN_STATUS_REPORT_VOLTAGE = 0x04 */
+	u8 type;
+	struct unknown_static_data unknown_data;
+	/* Fan type as detected by the device. See FAN_TYPE_* enum. */
+	u8 fan_type[FAN_CHANNELS_MAX];
+
+	union {
+		/* When type == FAN_STATUS_REPORT_SPEED */
+		struct {
+			/*
+			 * Fan speed, in RPM. Zero for channels without fans
+			 * connected.
+			 */
+			__le16 fan_rpm[FAN_CHANNELS_MAX];
+			/*
+			 * Fan duty cycle, in percent. Non-zero even for
+			 * channels without fans connected.
+			 */
+			u8 duty_percent[FAN_CHANNELS_MAX];
+			/*
+			 * Exactly the same values as duty_percent[], non-zero
+			 * for disconnected fans too.
+			 */
+			u8 duty_percent_dup[FAN_CHANNELS_MAX];
+			/* "Case Noise" in db */
+			u8 noise_db;
+		} __packed fan_speed;
+		/* When type == FAN_STATUS_REPORT_VOLTAGE */
+		struct {
+			/*
+			 * Voltage, in millivolts. Non-zero even when fan is
+			 * not connected.
+			 */
+			__le16 fan_in[FAN_CHANNELS_MAX];
+			/*
+			 * Current, in milliamperes. Near-zero when
+			 * disconnected.
+			 */
+			__le16 fan_current[FAN_CHANNELS_MAX];
+		} __packed fan_voltage;
+	} __packed;
+} __packed;
+
+#define OUTPUT_REPORT_SIZE 64
+
+enum {
+	OUTPUT_REPORT_ID_INIT_COMMAND = 0x60,
+	OUTPUT_REPORT_ID_SET_FAN_SPEED = 0x62,
+};
+
+enum {
+	INIT_COMMAND_SET_UPDATE_INTERVAL = 0x02,
+	INIT_COMMAND_DETECT_FANS = 0x03,
+};
+
+/*
+ * This output report sets pwm duty cycle/target fan speed for one or more
+ * channels.
+ */
+struct set_fan_speed_report {
+	/* report_id should be OUTPUT_REPORT_ID_SET_FAN_SPEED = 0x62 */
+	u8 report_id;
+	/* Should be 0x01 */
+	u8 magic;
+	/* To change fan speed on i-th channel, set i-th bit here */
+	u8 channel_bit_mask;
+	/*
+	 * Fan duty cycle/target speed in percent. For voltage-controlled fans,
+	 * the minimal voltage (duty_percent = 1) is about 9V.
+	 * Setting duty_percent to 0 (if the channel is selected in
+	 * channel_bit_mask) turns off the fan completely (regardless of the
+	 * control mode).
+	 */
+	u8 duty_percent[FAN_CHANNELS_MAX];
+} __packed;
+
+struct drvdata {
+	struct hid_device *hid;
+	struct device *hwmon;
+
+	u8 fan_duty_percent[FAN_CHANNELS];
+	u16 fan_rpm[FAN_CHANNELS];
+	bool pwm_status_received;
+
+	u16 fan_in[FAN_CHANNELS];
+	u16 fan_curr[FAN_CHANNELS];
+	bool voltage_status_received;
+
+	u8 fan_type[FAN_CHANNELS];
+	bool fan_config_received;
+
+	/*
+	 * wq is used to wait for *_received flags to become true.
+	 * All accesses to *_received flags and fan_* arrays are performed with
+	 * wq.lock held.
+	 */
+	wait_queue_head_t wq;
+	/*
+	 * mutex is used to:
+	 * 1) Prevent concurrent conflicting changes to update interval and pwm
+	 * values (after sending an output hid report, the corresponding field
+	 * in drvdata must be updated, and only then new output reports can be
+	 * sent).
+	 * 2) Synchronize access to output_buffer (well, the buffer is here,
+	 * because synchronization is necessary anyway - so why not get rid of
+	 * a kmalloc?).
+	 */
+	struct mutex mutex;
+	long update_interval;
+	u8 output_buffer[OUTPUT_REPORT_SIZE];
+};
+
+static long scale_pwm_value(long val, long orig_max, long new_max)
+{
+	if (val <= 0)
+		return 0;
+
+	/*
+	 * Positive values should not become zero: 0 completely turns off the
+	 * fan.
+	 */
+	return max(1L, DIV_ROUND_CLOSEST(min(val, orig_max) * new_max, orig_max));
+}
+
+static void handle_fan_config_report(struct drvdata *drvdata, void *data, int size)
+{
+	struct fan_config_report *report = data;
+	int i;
+
+	if (size < sizeof(struct fan_config_report))
+		return;
+
+	if (report->magic != 0x03)
+		return;
+
+	spin_lock(&drvdata->wq.lock);
+
+	for (i = 0; i < FAN_CHANNELS; i++)
+		drvdata->fan_type[i] = report->fan_type[i];
+
+	drvdata->fan_config_received = true;
+	wake_up_all_locked(&drvdata->wq);
+	spin_unlock(&drvdata->wq.lock);
+}
+
+static void handle_fan_status_report(struct drvdata *drvdata, void *data, int size)
+{
+	struct fan_status_report *report = data;
+	int i;
+
+	if (size < sizeof(struct fan_status_report))
+		return;
+
+	spin_lock(&drvdata->wq.lock);
+
+	/*
+	 * The device sends INPUT_REPORT_ID_FAN_CONFIG = 0x61 report in response
+	 * to "detect fans" command. Only accept other data after getting 0x61,
+	 * to make sure that fan detection is complete. In particular, fan
+	 * detection resets pwm values.
+	 */
+	if (!drvdata->fan_config_received) {
+		spin_unlock(&drvdata->wq.lock);
+		return;
+	}
+
+	for (i = 0; i < FAN_CHANNELS; i++) {
+		if (drvdata->fan_type[i] == report->fan_type[i])
+			continue;
+
+		/*
+		 * This should not happen (if my expectations about the device
+		 * are correct).
+		 *
+		 * Even if the userspace sends fan detect command through
+		 * hidraw, fan config report should arrive first.
+		 */
+		hid_warn_once(drvdata->hid,
+			      "Fan %d type changed unexpectedly from %d to %d",
+			      i, drvdata->fan_type[i], report->fan_type[i]);
+		drvdata->fan_type[i] = report->fan_type[i];
+	}
+
+	switch (report->type) {
+	case FAN_STATUS_REPORT_SPEED:
+		for (i = 0; i < FAN_CHANNELS; i++) {
+			drvdata->fan_rpm[i] =
+				get_unaligned_le16(&report->fan_speed.fan_rpm[i]);
+			drvdata->fan_duty_percent[i] =
+				report->fan_speed.duty_percent[i];
+		}
+
+		drvdata->pwm_status_received = true;
+		wake_up_all_locked(&drvdata->wq);
+		break;
+
+	case FAN_STATUS_REPORT_VOLTAGE:
+		for (i = 0; i < FAN_CHANNELS; i++) {
+			drvdata->fan_in[i] =
+				get_unaligned_le16(&report->fan_voltage.fan_in[i]);
+			drvdata->fan_curr[i] =
+				get_unaligned_le16(&report->fan_voltage.fan_current[i]);
+		}
+
+		drvdata->voltage_status_received = true;
+		wake_up_all_locked(&drvdata->wq);
+		break;
+	}
+
+	spin_unlock(&drvdata->wq.lock);
+}
+
+static umode_t nzxt_smart2_hwmon_is_visible(const void *data,
+					    enum hwmon_sensor_types type,
+					    u32 attr, int channel)
+{
+	switch (type) {
+	case hwmon_pwm:
+		switch (attr) {
+		case hwmon_pwm_input:
+		case hwmon_pwm_enable:
+			return 0644;
+
+		default:
+			return 0444;
+		}
+
+	case hwmon_chip:
+		switch (attr) {
+		case hwmon_chip_update_interval:
+			return 0644;
+
+		default:
+			return 0444;
+		}
+
+	default:
+		return 0444;
+	}
+}
+
+static int nzxt_smart2_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+				  u32 attr, int channel, long *val)
+{
+	struct drvdata *drvdata = dev_get_drvdata(dev);
+	int res = -EINVAL;
+
+	if (type == hwmon_chip) {
+		switch (attr) {
+		case hwmon_chip_update_interval:
+			*val = drvdata->update_interval;
+			return 0;
+
+		default:
+			return -EINVAL;
+		}
+	}
+
+	spin_lock_irq(&drvdata->wq.lock);
+
+	switch (type) {
+	case hwmon_pwm:
+		/*
+		 * fancontrol:
+		 * 1) remembers pwm* values when it starts
+		 * 2) needs pwm*_enable to be 1 on controlled fans
+		 * So make sure we have correct data before allowing pwm* reads.
+		 * Returning errors for pwm of fan speed read can even cause
+		 * fancontrol to shut down. So the wait is unavoidable.
+		 */
+		switch (attr) {
+		case hwmon_pwm_enable:
+			res = wait_event_interruptible_locked_irq(drvdata->wq,
+								  drvdata->fan_config_received);
+			if (res)
+				goto unlock;
+
+			*val = drvdata->fan_type[channel] != FAN_TYPE_NONE;
+			break;
+
+		case hwmon_pwm_mode:
+			res = wait_event_interruptible_locked_irq(drvdata->wq,
+								  drvdata->fan_config_received);
+			if (res)
+				goto unlock;
+
+			*val = drvdata->fan_type[channel] == FAN_TYPE_PWM;
+			break;
+
+		case hwmon_pwm_input:
+			res = wait_event_interruptible_locked_irq(drvdata->wq,
+								  drvdata->pwm_status_received);
+			if (res)
+				goto unlock;
+
+			*val = scale_pwm_value(drvdata->fan_duty_percent[channel],
+					       100, 255);
+			break;
+		}
+		break;
+
+	case hwmon_fan:
+		/*
+		 * It's not strictly necessary to wait for *_received in the
+		 * remaining cases (fancontrol doesn't care about them). But I'm
+		 * doing it to have consistent behavior.
+		 */
+		if (attr == hwmon_fan_input) {
+			res = wait_event_interruptible_locked_irq(drvdata->wq,
+								  drvdata->pwm_status_received);
+			if (res)
+				goto unlock;
+
+			*val = drvdata->fan_rpm[channel];
+		}
+		break;
+
+	case hwmon_in:
+		if (attr == hwmon_in_input) {
+			res = wait_event_interruptible_locked_irq(drvdata->wq,
+								  drvdata->voltage_status_received);
+			if (res)
+				goto unlock;
+
+			*val = drvdata->fan_in[channel];
+		}
+		break;
+
+	case hwmon_curr:
+		if (attr == hwmon_curr_input) {
+			res = wait_event_interruptible_locked_irq(drvdata->wq,
+								  drvdata->voltage_status_received);
+			if (res)
+				goto unlock;
+
+			*val = drvdata->fan_curr[channel];
+		}
+		break;
+
+	default:
+		break;
+	}
+
+unlock:
+	spin_unlock_irq(&drvdata->wq.lock);
+	return res;
+}
+
+static int send_output_report(struct drvdata *drvdata, const void *data,
+			      size_t data_size)
+{
+	int ret;
+
+	if (data_size > sizeof(drvdata->output_buffer))
+		return -EINVAL;
+
+	memcpy(drvdata->output_buffer, data, data_size);
+
+	if (data_size < sizeof(drvdata->output_buffer))
+		memset(drvdata->output_buffer + data_size, 0,
+		       sizeof(drvdata->output_buffer) - data_size);
+
+	ret = hid_hw_output_report(drvdata->hid, drvdata->output_buffer,
+				   sizeof(drvdata->output_buffer));
+	return ret < 0 ? ret : 0;
+}
+
+static int set_pwm(struct drvdata *drvdata, int channel, long val)
+{
+	int ret;
+	u8 duty_percent = scale_pwm_value(val, 255, 100);
+
+	struct set_fan_speed_report report = {
+		.report_id = OUTPUT_REPORT_ID_SET_FAN_SPEED,
+		.magic = 1,
+		.channel_bit_mask = 1 << channel
+	};
+
+	ret = mutex_lock_interruptible(&drvdata->mutex);
+	if (ret)
+		return ret;
+
+	report.duty_percent[channel] = duty_percent;
+	ret = send_output_report(drvdata, &report, sizeof(report));
+	if (ret)
+		goto unlock;
+
+	/*
+	 * pwmconfig and fancontrol scripts expect pwm writes to take effect
+	 * immediately (i. e. read from pwm* sysfs should return the value
+	 * written into it). The device seems to always accept pwm values - even
+	 * when there is no fan connected - so update pwm status without waiting
+	 * for a report, to make pwmconfig and fancontrol happy. Worst case -
+	 * if the device didn't accept new pwm value for some reason (never seen
+	 * this in practice) - it will be reported incorrectly only until next
+	 * update. This avoids "fan stuck" messages from pwmconfig, and
+	 * fancontrol setting fan speed to 100% during shutdown.
+	 */
+	spin_lock_bh(&drvdata->wq.lock);
+	drvdata->fan_duty_percent[channel] = duty_percent;
+	spin_unlock_bh(&drvdata->wq.lock);
+
+unlock:
+	mutex_unlock(&drvdata->mutex);
+	return ret;
+}
+
+/*
+ * Workaround for fancontrol/pwmconfig trying to write to pwm*_enable even if it
+ * already is 1 and read-only. Otherwise, fancontrol won't restore pwm on
+ * shutdown properly.
+ */
+static int set_pwm_enable(struct drvdata *drvdata, int channel, long val)
+{
+	long expected_val;
+	int res;
+
+	spin_lock_irq(&drvdata->wq.lock);
+
+	res = wait_event_interruptible_locked_irq(drvdata->wq,
+						  drvdata->fan_config_received);
+	if (res) {
+		spin_unlock_irq(&drvdata->wq.lock);
+		return res;
+	}
+
+	expected_val = drvdata->fan_type[channel] != FAN_TYPE_NONE;
+
+	spin_unlock_irq(&drvdata->wq.lock);
+
+	return (val == expected_val) ? 0 : -EOPNOTSUPP;
+}
+
+/*
+ * Control byte	| Actual update interval in seconds
+ * 0xff		| 65.5
+ * 0xf7		| 63.46
+ * 0x7f		| 32.74
+ * 0x3f		| 16.36
+ * 0x1f		| 8.17
+ * 0x0f		| 4.07
+ * 0x07		| 2.02
+ * 0x03		| 1.00
+ * 0x02		| 0.744
+ * 0x01		| 0.488
+ * 0x00		| 0.25
+ */
+static u8 update_interval_to_control_byte(long interval)
+{
+	if (interval <= 250)
+		return 0;
+
+	return clamp_val(1 + DIV_ROUND_CLOSEST(interval - 488, 256), 0, 255);
+}
+
+static long control_byte_to_update_interval(u8 control_byte)
+{
+	if (control_byte == 0)
+		return 250;
+
+	return 488 + (control_byte - 1) * 256;
+}
+
+static int set_update_interval(struct drvdata *drvdata, long val)
+{
+	u8 control = update_interval_to_control_byte(val);
+	u8 report[] = {
+		OUTPUT_REPORT_ID_INIT_COMMAND,
+		INIT_COMMAND_SET_UPDATE_INTERVAL,
+		0x01,
+		0xe8,
+		control,
+		0x01,
+		0xe8,
+		control,
+	};
+	int ret;
+
+	ret = send_output_report(drvdata, report, sizeof(report));
+	if (ret)
+		return ret;
+
+	drvdata->update_interval = control_byte_to_update_interval(control);
+	return 0;
+}
+
+static int init_device(struct drvdata *drvdata, long update_interval)
+{
+	int ret;
+	static const u8 detect_fans_report[] = {
+		OUTPUT_REPORT_ID_INIT_COMMAND,
+		INIT_COMMAND_DETECT_FANS,
+	};
+
+	ret = send_output_report(drvdata, detect_fans_report,
+				 sizeof(detect_fans_report));
+	if (ret)
+		return ret;
+
+	return set_update_interval(drvdata, update_interval);
+}
+
+static int nzxt_smart2_hwmon_write(struct device *dev,
+				   enum hwmon_sensor_types type, u32 attr,
+				   int channel, long val)
+{
+	struct drvdata *drvdata = dev_get_drvdata(dev);
+	int ret;
+
+	switch (type) {
+	case hwmon_pwm:
+		switch (attr) {
+		case hwmon_pwm_enable:
+			return set_pwm_enable(drvdata, channel, val);
+
+		case hwmon_pwm_input:
+			return set_pwm(drvdata, channel, val);
+
+		default:
+			return -EINVAL;
+		}
+
+	case hwmon_chip:
+		switch (attr) {
+		case hwmon_chip_update_interval:
+			ret = mutex_lock_interruptible(&drvdata->mutex);
+			if (ret)
+				return ret;
+
+			ret = set_update_interval(drvdata, val);
+
+			mutex_unlock(&drvdata->mutex);
+			return ret;
+
+		default:
+			return -EINVAL;
+		}
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int nzxt_smart2_hwmon_read_string(struct device *dev,
+					 enum hwmon_sensor_types type, u32 attr,
+					 int channel, const char **str)
+{
+	switch (type) {
+	case hwmon_fan:
+		*str = fan_label[channel];
+		return 0;
+	case hwmon_curr:
+		*str = curr_label[channel];
+		return 0;
+	case hwmon_in:
+		*str = in_label[channel];
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct hwmon_ops nzxt_smart2_hwmon_ops = {
+	.is_visible = nzxt_smart2_hwmon_is_visible,
+	.read = nzxt_smart2_hwmon_read,
+	.read_string = nzxt_smart2_hwmon_read_string,
+	.write = nzxt_smart2_hwmon_write,
+};
+
+static const struct hwmon_channel_info *nzxt_smart2_channel_info[] = {
+	HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT | HWMON_F_LABEL,
+			   HWMON_F_INPUT | HWMON_F_LABEL,
+			   HWMON_F_INPUT | HWMON_F_LABEL),
+	HWMON_CHANNEL_INFO(pwm, HWMON_PWM_INPUT | HWMON_PWM_MODE | HWMON_PWM_ENABLE,
+			   HWMON_PWM_INPUT | HWMON_PWM_MODE | HWMON_PWM_ENABLE,
+			   HWMON_PWM_INPUT | HWMON_PWM_MODE | HWMON_PWM_ENABLE),
+	HWMON_CHANNEL_INFO(in, HWMON_I_INPUT | HWMON_I_LABEL,
+			   HWMON_I_INPUT | HWMON_I_LABEL,
+			   HWMON_I_INPUT | HWMON_I_LABEL),
+	HWMON_CHANNEL_INFO(curr, HWMON_C_INPUT | HWMON_C_LABEL,
+			   HWMON_C_INPUT | HWMON_C_LABEL,
+			   HWMON_C_INPUT | HWMON_C_LABEL),
+	HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL),
+	NULL
+};
+
+static const struct hwmon_chip_info nzxt_smart2_chip_info = {
+	.ops = &nzxt_smart2_hwmon_ops,
+	.info = nzxt_smart2_channel_info,
+};
+
+static int nzxt_smart2_hid_raw_event(struct hid_device *hdev,
+				     struct hid_report *report, u8 *data, int size)
+{
+	struct drvdata *drvdata = hid_get_drvdata(hdev);
+	u8 report_id = *data;
+
+	switch (report_id) {
+	case INPUT_REPORT_ID_FAN_CONFIG:
+		handle_fan_config_report(drvdata, data, size);
+		break;
+
+	case INPUT_REPORT_ID_FAN_STATUS:
+		handle_fan_status_report(drvdata, data, size);
+		break;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused nzxt_smart2_hid_reset_resume(struct hid_device *hdev)
+{
+	struct drvdata *drvdata = hid_get_drvdata(hdev);
+
+	/*
+	 * Userspace is still frozen (so no concurrent sysfs attribute access
+	 * is possible), but raw_event can already be called concurrently.
+	 */
+	spin_lock_bh(&drvdata->wq.lock);
+	drvdata->fan_config_received = false;
+	drvdata->pwm_status_received = false;
+	drvdata->voltage_status_received = false;
+	spin_unlock_bh(&drvdata->wq.lock);
+
+	return init_device(drvdata, drvdata->update_interval);
+}
+
+static int nzxt_smart2_hid_probe(struct hid_device *hdev,
+				 const struct hid_device_id *id)
+{
+	struct drvdata *drvdata;
+	int ret;
+
+	drvdata = devm_kzalloc(&hdev->dev, sizeof(struct drvdata), GFP_KERNEL);
+	if (!drvdata)
+		return -ENOMEM;
+
+	drvdata->hid = hdev;
+	hid_set_drvdata(hdev, drvdata);
+
+	init_waitqueue_head(&drvdata->wq);
+
+	mutex_init(&drvdata->mutex);
+	devm_add_action(&hdev->dev, (void (*)(void *))mutex_destroy,
+			&drvdata->mutex);
+
+	ret = hid_parse(hdev);
+	if (ret)
+		return ret;
+
+	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
+	if (ret)
+		return ret;
+
+	ret = hid_hw_open(hdev);
+	if (ret)
+		goto out_hw_stop;
+
+	hid_device_io_start(hdev);
+
+	init_device(drvdata, UPDATE_INTERVAL_DEFAULT_MS);
+
+	drvdata->hwmon =
+		hwmon_device_register_with_info(&hdev->dev, "nzxtsmart2", drvdata,
+						&nzxt_smart2_chip_info, NULL);
+	if (IS_ERR(drvdata->hwmon)) {
+		ret = PTR_ERR(drvdata->hwmon);
+		goto out_hw_close;
+	}
+
+	return 0;
+
+out_hw_close:
+	hid_hw_close(hdev);
+
+out_hw_stop:
+	hid_hw_stop(hdev);
+	return ret;
+}
+
+static void nzxt_smart2_hid_remove(struct hid_device *hdev)
+{
+	struct drvdata *drvdata = hid_get_drvdata(hdev);
+
+	hwmon_device_unregister(drvdata->hwmon);
+
+	hid_hw_close(hdev);
+	hid_hw_stop(hdev);
+}
+
+static const struct hid_device_id nzxt_smart2_hid_id_table[] = {
+	{ HID_USB_DEVICE(0x1e71, 0x2006) }, /* NZXT Smart Device V2 */
+	{ HID_USB_DEVICE(0x1e71, 0x200d) }, /* NZXT Smart Device V2 */
+	{ HID_USB_DEVICE(0x1e71, 0x2009) }, /* NZXT RGB & Fan Controller */
+	{ HID_USB_DEVICE(0x1e71, 0x200e) }, /* NZXT RGB & Fan Controller */
+	{ HID_USB_DEVICE(0x1e71, 0x2010) }, /* NZXT RGB & Fan Controller */
+	{},
+};
+
+static struct hid_driver nzxt_smart2_hid_driver = {
+	.name = "nzxt-smart2",
+	.id_table = nzxt_smart2_hid_id_table,
+	.probe = nzxt_smart2_hid_probe,
+	.remove = nzxt_smart2_hid_remove,
+	.raw_event = nzxt_smart2_hid_raw_event,
+#ifdef CONFIG_PM
+	.reset_resume = nzxt_smart2_hid_reset_resume,
+#endif
+};
+
+static int __init nzxt_smart2_init(void)
+{
+	return hid_register_driver(&nzxt_smart2_hid_driver);
+}
+
+static void __exit nzxt_smart2_exit(void)
+{
+	hid_unregister_driver(&nzxt_smart2_hid_driver);
+}
+
+MODULE_DEVICE_TABLE(hid, nzxt_smart2_hid_id_table);
+MODULE_AUTHOR("Aleksandr Mezin <mezin.alexander@gmail.com>");
+MODULE_DESCRIPTION("Driver for NZXT RGB & Fan Controller/Smart Device V2");
+MODULE_LICENSE("GPL");
+
+/*
+ * With module_init()/module_hid_driver() and the driver built into the kernel:
+ *
+ * Driver 'nzxt_smart2' was unable to register with bus_type 'hid' because the
+ * bus was not initialized.
+ */
+late_initcall(nzxt_smart2_init);
+module_exit(nzxt_smart2_exit);

drivers/hwmon/pmbus/Kconfig

@@ -66,6 +66,16 @@ config SENSORS_BPA_RS600
 	  This driver can also be built as a module. If so, the module will
 	  be called bpa-rs600.
 
+config SENSORS_DELTA_AHE50DC_FAN
+	tristate "Delta AHE-50DC fan control module"
+	help
+	  If you say yes here you get hardware monitoring support for
+	  the integrated fan control module of the Delta AHE-50DC
+	  Open19 power shelf.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called delta-ahe50dc-fan.
+
 config SENSORS_FSP_3Y
 	tristate "FSP/3Y-Power power supplies"
 	help
@@ -123,14 +133,20 @@ config SENSORS_IR36021
 	  be called ir36021.
 
 config SENSORS_IR38064
-	tristate "Infineon IR38064"
+	tristate "Infineon IR38064 and compatibles"
 	help
 	  If you say yes here you get hardware monitoring support for Infineon
-	  IR38064.
+	  IR38060, IR38064, IR38164 and IR38263.
 
 	  This driver can also be built as a module. If so, the module will
 	  be called ir38064.
 
+config SENSORS_IR38064_REGULATOR
+	bool "Regulator support for IR38064 and compatibles"
+	depends on SENSORS_IR38064 && REGULATOR
+	help
+	  Uses the IR38064 or compatible as regulator.
+
 config SENSORS_IRPS5401
 	tristate "Infineon IRPS5401"
 	help
@@ -276,6 +292,15 @@ 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

drivers/hwmon/pmbus/Makefile

@@ -9,6 +9,7 @@ obj-$(CONFIG_SENSORS_ADM1266)	+= adm1266.o
 obj-$(CONFIG_SENSORS_ADM1275)	+= adm1275.o
 obj-$(CONFIG_SENSORS_BEL_PFE)	+= bel-pfe.o
 obj-$(CONFIG_SENSORS_BPA_RS600)	+= bpa-rs600.o
+obj-$(CONFIG_SENSORS_DELTA_AHE50DC_FAN) += delta-ahe50dc-fan.o
 obj-$(CONFIG_SENSORS_FSP_3Y)	+= fsp-3y.o
 obj-$(CONFIG_SENSORS_IBM_CFFPS)	+= ibm-cffps.o
 obj-$(CONFIG_SENSORS_DPS920AB)	+= dps920ab.o
@@ -31,6 +32,7 @@ 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

drivers/hwmon/pmbus/delta-ahe50dc-fan.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Delta AHE-50DC power shelf fan control module driver
+ *
+ * Copyright 2021 Zev Weiss <zev@bewilderbeest.net>
+ */
+
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pmbus.h>
+
+#include "pmbus.h"
+
+#define AHE50DC_PMBUS_READ_TEMP4 0xd0
+
+static int ahe50dc_fan_read_word_data(struct i2c_client *client, int page, int phase, int reg)
+{
+	/* temp1 in (virtual) page 1 is remapped to mfr-specific temp4 */
+	if (page == 1) {
+		if (reg == PMBUS_READ_TEMPERATURE_1)
+			return i2c_smbus_read_word_data(client, AHE50DC_PMBUS_READ_TEMP4);
+		return -EOPNOTSUPP;
+	}
+
+	/*
+	 * There's a fairly limited set of commands this device actually
+	 * supports, so here we block attempts to read anything else (which
+	 * return 0xffff and would cause confusion elsewhere).
+	 */
+	switch (reg) {
+	case PMBUS_STATUS_WORD:
+	case PMBUS_FAN_COMMAND_1:
+	case PMBUS_FAN_COMMAND_2:
+	case PMBUS_FAN_COMMAND_3:
+	case PMBUS_FAN_COMMAND_4:
+	case PMBUS_STATUS_FAN_12:
+	case PMBUS_STATUS_FAN_34:
+	case PMBUS_READ_VIN:
+	case PMBUS_READ_TEMPERATURE_1:
+	case PMBUS_READ_TEMPERATURE_2:
+	case PMBUS_READ_TEMPERATURE_3:
+	case PMBUS_READ_FAN_SPEED_1:
+	case PMBUS_READ_FAN_SPEED_2:
+	case PMBUS_READ_FAN_SPEED_3:
+	case PMBUS_READ_FAN_SPEED_4:
+		return -ENODATA;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static struct pmbus_driver_info ahe50dc_fan_info = {
+	.pages = 2,
+	.format[PSC_FAN] = direct,
+	.format[PSC_TEMPERATURE] = direct,
+	.format[PSC_VOLTAGE_IN] = direct,
+	.m[PSC_FAN] = 1,
+	.b[PSC_FAN] = 0,
+	.R[PSC_FAN] = 0,
+	.m[PSC_TEMPERATURE] = 1,
+	.b[PSC_TEMPERATURE] = 0,
+	.R[PSC_TEMPERATURE] = 1,
+	.m[PSC_VOLTAGE_IN] = 1,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = 3,
+	.func[0] = PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
+		PMBUS_HAVE_VIN | PMBUS_HAVE_FAN12 | PMBUS_HAVE_FAN34 |
+		PMBUS_HAVE_STATUS_FAN12 | PMBUS_HAVE_STATUS_FAN34 | PMBUS_PAGE_VIRTUAL,
+	.func[1] = PMBUS_HAVE_TEMP | PMBUS_PAGE_VIRTUAL,
+	.read_word_data = ahe50dc_fan_read_word_data,
+};
+
+/*
+ * CAPABILITY returns 0xff, which appears to be this device's way indicating
+ * it doesn't support something (and if we enable I2C_CLIENT_PEC on seeing bit
+ * 7 being set it generates bad PECs, so let's not go there).
+ */
+static struct pmbus_platform_data ahe50dc_fan_data = {
+	.flags = PMBUS_NO_CAPABILITY,
+};
+
+static int ahe50dc_fan_probe(struct i2c_client *client)
+{
+	client->dev.platform_data = &ahe50dc_fan_data;
+	return pmbus_do_probe(client, &ahe50dc_fan_info);
+}
+
+static const struct i2c_device_id ahe50dc_fan_id[] = {
+	{ "ahe50dc_fan" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ahe50dc_fan_id);
+
+static const struct of_device_id __maybe_unused ahe50dc_fan_of_match[] = {
+	{ .compatible = "delta,ahe50dc-fan" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ahe50dc_fan_of_match);
+
+static struct i2c_driver ahe50dc_fan_driver = {
+	.driver = {
+		   .name = "ahe50dc_fan",
+		   .of_match_table = of_match_ptr(ahe50dc_fan_of_match),
+	},
+	.probe_new = ahe50dc_fan_probe,
+	.id_table = ahe50dc_fan_id,
+};
+module_i2c_driver(ahe50dc_fan_driver);
+
+MODULE_AUTHOR("Zev Weiss <zev@bewilderbeest.net>");
+MODULE_DESCRIPTION("Driver for Delta AHE-50DC power shelf fan control module");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(PMBUS);

drivers/hwmon/pmbus/ir38064.c

@@ -16,8 +16,16 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regulator/driver.h>
 #include "pmbus.h"
 
+#if IS_ENABLED(CONFIG_SENSORS_IR38064_REGULATOR)
+static const struct regulator_desc ir38064_reg_desc[] = {
+	PMBUS_REGULATOR("vout", 0),
+};
+#endif /* CONFIG_SENSORS_IR38064_REGULATOR */
+
 static struct pmbus_driver_info ir38064_info = {
 	.pages = 1,
 	.format[PSC_VOLTAGE_IN] = linear,
@@ -33,6 +41,10 @@ static struct pmbus_driver_info ir38064_info = {
 	    | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
 	    | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
 	    | PMBUS_HAVE_POUT,
+#if IS_ENABLED(CONFIG_SENSORS_IR38064_REGULATOR)
+	.num_regulators = 1,
+	.reg_desc = ir38064_reg_desc,
+#endif
 };
 
 static int ir38064_probe(struct i2c_client *client)
@@ -41,16 +53,30 @@ static int ir38064_probe(struct i2c_client *client)
 }
 
 static const struct i2c_device_id ir38064_id[] = {
+	{"ir38060", 0},
 	{"ir38064", 0},
+	{"ir38164", 0},
+	{"ir38263", 0},
 	{}
 };
 
 MODULE_DEVICE_TABLE(i2c, ir38064_id);
 
+static const struct of_device_id ir38064_of_match[] = {
+	{ .compatible = "infineon,ir38060" },
+	{ .compatible = "infineon,ir38064" },
+	{ .compatible = "infineon,ir38164" },
+	{ .compatible = "infineon,ir38263" },
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, ir38064_of_match);
+
 /* This is the driver that will be inserted */
 static struct i2c_driver ir38064_driver = {
 	.driver = {
 		   .name = "ir38064",
+		   .of_match_table = of_match_ptr(ir38064_of_match),
 		   },
 	.probe_new = ir38064_probe,
 	.id_table = ir38064_id,
@@ -59,6 +85,6 @@ static struct i2c_driver ir38064_driver = {
 module_i2c_driver(ir38064_driver);
 
 MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>");
-MODULE_DESCRIPTION("PMBus driver for Infineon IR38064");
+MODULE_DESCRIPTION("PMBus driver for Infineon IR38064 and compatible chips");
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS(PMBUS);

drivers/hwmon/pmbus/mp5023.c

+// 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@quantatw.com>");
+MODULE_DESCRIPTION("PMBus driver for MPS MP5023 HSC");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(PMBUS);

drivers/hwmon/raspberrypi-hwmon.c

@@ -120,6 +120,8 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
 							       data,
 							       &rpi_chip_info,
 							       NULL);
+	if (IS_ERR(data->hwmon_dev))
+		return PTR_ERR(data->hwmon_dev);
 
 	ret = devm_delayed_work_autocancel(dev, &data->get_values_poll_work,
 					   get_values_poll);
@@ -127,10 +129,9 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
 		return ret;
 	platform_set_drvdata(pdev, data);
 
-	if (!PTR_ERR_OR_ZERO(data->hwmon_dev))
-		schedule_delayed_work(&data->get_values_poll_work, 2 * HZ);
+	schedule_delayed_work(&data->get_values_poll_work, 2 * HZ);
 
-	return PTR_ERR_OR_ZERO(data->hwmon_dev);
+	return 0;
 }
 
 static struct platform_driver rpi_hwmon_driver = {

drivers/hwmon/sht4x.c

@@ -281,9 +281,16 @@ static const struct i2c_device_id sht4x_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, sht4x_id);
 
+static const struct of_device_id sht4x_of_match[] = {
+	{ .compatible = "sensirion,sht4x" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sht4x_of_match);
+
 static struct i2c_driver sht4x_driver = {
 	.driver = {
 		.name = "sht4x",
+		.of_match_table = sht4x_of_match,
 	},
 	.probe		= sht4x_probe,
 	.id_table	= sht4x_id,

drivers/hwmon/tmp401.c

@@ -18,17 +18,15 @@
  * and thus has 16 bits registers for its value and limit instead of 8 bits.
  */
 
-#include <linux/module.h>
-#include <linux/init.h>
 #include <linux/bitops.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
+#include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
-#include <linux/sysfs.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
 
 /* Addresses to scan */
 static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4c, 0x4d,
@@ -41,44 +39,19 @@ enum chips { tmp401, tmp411, tmp431, tmp432, tmp435 };
  * reading and writing
  */
 #define TMP401_STATUS				0x02
-#define TMP401_CONFIG_READ			0x03
-#define TMP401_CONFIG_WRITE			0x09
-#define TMP401_CONVERSION_RATE_READ		0x04
-#define TMP401_CONVERSION_RATE_WRITE		0x0A
+#define TMP401_CONFIG				0x03
+#define TMP401_CONVERSION_RATE			0x04
 #define TMP401_TEMP_CRIT_HYST			0x21
 #define TMP401_MANUFACTURER_ID_REG		0xFE
 #define TMP401_DEVICE_ID_REG			0xFF
 
-static const u8 TMP401_TEMP_MSB_READ[7][2] = {
-	{ 0x00, 0x01 },	/* temp */
-	{ 0x06, 0x08 },	/* low limit */
-	{ 0x05, 0x07 },	/* high limit */
-	{ 0x20, 0x19 },	/* therm (crit) limit */
-	{ 0x30, 0x34 },	/* lowest */
-	{ 0x32, 0x36 },	/* highest */
-};
-
-static const u8 TMP401_TEMP_MSB_WRITE[7][2] = {
-	{ 0, 0 },	/* temp (unused) */
-	{ 0x0C, 0x0E },	/* low limit */
-	{ 0x0B, 0x0D },	/* high limit */
-	{ 0x20, 0x19 },	/* therm (crit) limit */
-	{ 0x30, 0x34 },	/* lowest */
-	{ 0x32, 0x36 },	/* highest */
-};
-
-static const u8 TMP432_TEMP_MSB_READ[4][3] = {
+static const u8 TMP401_TEMP_MSB[7][3] = {
 	{ 0x00, 0x01, 0x23 },	/* temp */
 	{ 0x06, 0x08, 0x16 },	/* low limit */
 	{ 0x05, 0x07, 0x15 },	/* high limit */
-	{ 0x20, 0x19, 0x1A },	/* therm (crit) limit */
-};
-
-static const u8 TMP432_TEMP_MSB_WRITE[4][3] = {
-	{ 0, 0, 0 },		/* temp  - unused */
-	{ 0x0C, 0x0E, 0x16 },	/* low limit */
-	{ 0x0B, 0x0D, 0x15 },	/* high limit */
-	{ 0x20, 0x19, 0x1A },	/* therm (crit) limit */
+	{ 0x20, 0x19, 0x1a },	/* therm (crit) limit */
+	{ 0x30, 0x34, 0x00 },	/* lowest */
+	{ 0x32, 0xf6, 0x00 },	/* highest */
 };
 
 /* [0] = fault, [1] = low, [2] = high, [3] = therm/crit */
@@ -131,311 +104,323 @@ MODULE_DEVICE_TABLE(i2c, tmp401_id);
 
 struct tmp401_data {
 	struct i2c_client *client;
-	const struct attribute_group *groups[3];
+	struct regmap *regmap;
 	struct mutex update_lock;
-	bool valid; /* false until following fields are valid */
-	unsigned long last_updated; /* in jiffies */
 	enum chips kind;
 
-	unsigned int update_interval;	/* in milliseconds */
+	bool extended_range;
 
-	/* register values */
-	u8 status[4];
-	u8 config;
-	u16 temp[7][3];
-	u8 temp_crit_hyst;
+	/* hwmon API configuration data */
+	u32 chip_channel_config[4];
+	struct hwmon_channel_info chip_info;
+	u32 temp_channel_config[4];
+	struct hwmon_channel_info temp_info;
+	const struct hwmon_channel_info *info[3];
+	struct hwmon_chip_info chip;
 };
 
-/*
- * Sysfs attr show / store functions
- */
-
-static int tmp401_register_to_temp(u16 reg, u8 config)
-{
-	int temp = reg;
-
-	if (config & TMP401_CONFIG_RANGE)
-		temp -= 64 * 256;
-
-	return DIV_ROUND_CLOSEST(temp * 125, 32);
-}
+/* regmap */
 
-static u16 tmp401_temp_to_register(long temp, u8 config, int zbits)
+static bool tmp401_regmap_is_volatile(struct device *dev, unsigned int reg)
 {
-	if (config & TMP401_CONFIG_RANGE) {
-		temp = clamp_val(temp, -64000, 191000);
-		temp += 64000;
-	} else
-		temp = clamp_val(temp, 0, 127000);
-
-	return DIV_ROUND_CLOSEST(temp * (1 << (8 - zbits)), 1000) << zbits;
-}
-
-static int tmp401_update_device_reg16(struct i2c_client *client,
-				      struct tmp401_data *data)
-{
-	int i, j, val;
-	int num_regs = data->kind == tmp411 ? 6 : 4;
-	int num_sensors = data->kind == tmp432 ? 3 : 2;
-
-	for (i = 0; i < num_sensors; i++) {		/* local / r1 / r2 */
-		for (j = 0; j < num_regs; j++) {	/* temp / low / ... */
-			u8 regaddr;
-
-			regaddr = data->kind == tmp432 ?
-						TMP432_TEMP_MSB_READ[j][i] :
-						TMP401_TEMP_MSB_READ[j][i];
-			if (j == 3) { /* crit is msb only */
-				val = i2c_smbus_read_byte_data(client, regaddr);
-			} else {
-				val = i2c_smbus_read_word_swapped(client,
-								  regaddr);
-			}
-			if (val < 0)
-				return val;
-
-			data->temp[j][i] = j == 3 ? val << 8 : val;
-		}
+	switch (reg) {
+	case 0:			/* local temp msb */
+	case 1:			/* remote temp msb */
+	case 2:			/* status */
+	case 0x10:		/* remote temp lsb */
+	case 0x15:		/* local temp lsb */
+	case 0x1b:		/* status (tmp432) */
+	case 0x23 ... 0x24:	/* remote temp 2 msb / lsb */
+	case 0x30 ... 0x37:	/* lowest/highest temp; status (tmp432) */
+		return true;
+	default:
+		return false;
 	}
-	return 0;
 }
 
-static struct tmp401_data *tmp401_update_device(struct device *dev)
+static int tmp401_reg_read(void *context, unsigned int reg, unsigned int *val)
 {
-	struct tmp401_data *data = dev_get_drvdata(dev);
+	struct tmp401_data *data = context;
 	struct i2c_client *client = data->client;
-	struct tmp401_data *ret = data;
-	int i, val;
-	unsigned long next_update;
-
-	mutex_lock(&data->update_lock);
+	int regval;
 
-	next_update = data->last_updated +
-		      msecs_to_jiffies(data->update_interval);
-	if (time_after(jiffies, next_update) || !data->valid) {
-		if (data->kind != tmp432) {
-			/*
-			 * The driver uses the TMP432 status format internally.
-			 * Convert status to TMP432 format for other chips.
-			 */
-			val = i2c_smbus_read_byte_data(client, TMP401_STATUS);
-			if (val < 0) {
-				ret = ERR_PTR(val);
-				goto abort;
-			}
-			data->status[0] =
-			  (val & TMP401_STATUS_REMOTE_OPEN) >> 1;
-			data->status[1] =
-			  ((val & TMP401_STATUS_REMOTE_LOW) >> 2) |
-			  ((val & TMP401_STATUS_LOCAL_LOW) >> 5);
-			data->status[2] =
-			  ((val & TMP401_STATUS_REMOTE_HIGH) >> 3) |
-			  ((val & TMP401_STATUS_LOCAL_HIGH) >> 6);
-			data->status[3] = val & (TMP401_STATUS_LOCAL_CRIT
-						| TMP401_STATUS_REMOTE_CRIT);
-		} else {
-			for (i = 0; i < ARRAY_SIZE(data->status); i++) {
-				val = i2c_smbus_read_byte_data(client,
-							TMP432_STATUS_REG[i]);
-				if (val < 0) {
-					ret = ERR_PTR(val);
-					goto abort;
-				}
-				data->status[i] = val;
-			}
-		}
-
-		val = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
-		if (val < 0) {
-			ret = ERR_PTR(val);
-			goto abort;
-		}
-		data->config = val;
-		val = tmp401_update_device_reg16(client, data);
-		if (val < 0) {
-			ret = ERR_PTR(val);
-			goto abort;
+	switch (reg) {
+	case 0:			/* local temp msb */
+	case 1:			/* remote temp msb */
+	case 5:			/* local temp high limit msb */
+	case 6:			/* local temp low limit msb */
+	case 7:			/* remote temp ligh limit msb */
+	case 8:			/* remote temp low limit msb */
+	case 0x15:		/* remote temp 2 high limit msb */
+	case 0x16:		/* remote temp 2 low limit msb */
+	case 0x23:		/* remote temp 2 msb */
+	case 0x30:		/* local temp minimum, tmp411 */
+	case 0x32:		/* local temp maximum, tmp411 */
+	case 0x34:		/* remote temp minimum, tmp411 */
+	case 0xf6:		/* remote temp maximum, tmp411 (really 0x36) */
+		/* work around register overlap between TMP411 and TMP432 */
+		if (reg == 0xf6)
+			reg = 0x36;
+		regval = i2c_smbus_read_word_swapped(client, reg);
+		if (regval < 0)
+			return regval;
+		*val = regval;
+		break;
+	case 0x19:		/* critical limits, 8-bit registers */
+	case 0x1a:
+	case 0x20:
+		regval = i2c_smbus_read_byte_data(client, reg);
+		if (regval < 0)
+			return regval;
+		*val = regval << 8;
+		break;
+	case 0x1b:
+	case 0x35 ... 0x37:
+		if (data->kind == tmp432) {
+			regval = i2c_smbus_read_byte_data(client, reg);
+			if (regval < 0)
+				return regval;
+			*val = regval;
+			break;
 		}
-		val = i2c_smbus_read_byte_data(client, TMP401_TEMP_CRIT_HYST);
-		if (val < 0) {
-			ret = ERR_PTR(val);
-			goto abort;
+		/* simulate TMP432 status registers */
+		regval = i2c_smbus_read_byte_data(client, TMP401_STATUS);
+		if (regval < 0)
+			return regval;
+		*val = 0;
+		switch (reg) {
+		case 0x1b:	/* open / fault */
+			if (regval & TMP401_STATUS_REMOTE_OPEN)
+				*val |= BIT(1);
+			break;
+		case 0x35:	/* high limit */
+			if (regval & TMP401_STATUS_LOCAL_HIGH)
+				*val |= BIT(0);
+			if (regval & TMP401_STATUS_REMOTE_HIGH)
+				*val |= BIT(1);
+			break;
+		case 0x36:	/* low limit */
+			if (regval & TMP401_STATUS_LOCAL_LOW)
+				*val |= BIT(0);
+			if (regval & TMP401_STATUS_REMOTE_LOW)
+				*val |= BIT(1);
+			break;
+		case 0x37:	/* therm / crit limit */
+			if (regval & TMP401_STATUS_LOCAL_CRIT)
+				*val |= BIT(0);
+			if (regval & TMP401_STATUS_REMOTE_CRIT)
+				*val |= BIT(1);
+			break;
 		}
-		data->temp_crit_hyst = val;
-
-		data->last_updated = jiffies;
-		data->valid = true;
+		break;
+	default:
+		regval = i2c_smbus_read_byte_data(client, reg);
+		if (regval < 0)
+			return regval;
+		*val = regval;
+		break;
 	}
-
-abort:
-	mutex_unlock(&data->update_lock);
-	return ret;
+	return 0;
 }
 
-static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
-			 char *buf)
+static int tmp401_reg_write(void *context, unsigned int reg, unsigned int val)
 {
-	int nr = to_sensor_dev_attr_2(devattr)->nr;
-	int index = to_sensor_dev_attr_2(devattr)->index;
-	struct tmp401_data *data = tmp401_update_device(dev);
-
-	if (IS_ERR(data))
-		return PTR_ERR(data);
+	struct tmp401_data *data = context;
+	struct i2c_client *client = data->client;
 
-	return sprintf(buf, "%d\n",
-		tmp401_register_to_temp(data->temp[nr][index], data->config));
+	switch (reg) {
+	case 0x05:		/* local temp high limit msb */
+	case 0x06:		/* local temp low limit msb */
+	case 0x07:		/* remote temp ligh limit msb */
+	case 0x08:		/* remote temp low limit msb */
+		reg += 6;	/* adjust for register write address */
+		fallthrough;
+	case 0x15:		/* remote temp 2 high limit msb */
+	case 0x16:		/* remote temp 2 low limit msb */
+		return i2c_smbus_write_word_swapped(client, reg, val);
+	case 0x19:		/* critical limits, 8-bit registers */
+	case 0x1a:
+	case 0x20:
+		return i2c_smbus_write_byte_data(client, reg, val >> 8);
+	case TMP401_CONVERSION_RATE:
+	case TMP401_CONFIG:
+		reg += 6;	/* adjust for register write address */
+		fallthrough;
+	default:
+		return i2c_smbus_write_byte_data(client, reg, val);
+	}
 }
 
-static ssize_t temp_crit_hyst_show(struct device *dev,
-				   struct device_attribute *devattr,
-				   char *buf)
-{
-	int temp, index = to_sensor_dev_attr(devattr)->index;
-	struct tmp401_data *data = tmp401_update_device(dev);
-
-	if (IS_ERR(data))
-		return PTR_ERR(data);
-
-	mutex_lock(&data->update_lock);
-	temp = tmp401_register_to_temp(data->temp[3][index], data->config);
-	temp -= data->temp_crit_hyst * 1000;
-	mutex_unlock(&data->update_lock);
+static const struct regmap_config tmp401_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.cache_type = REGCACHE_RBTREE,
+	.volatile_reg = tmp401_regmap_is_volatile,
+	.reg_read = tmp401_reg_read,
+	.reg_write = tmp401_reg_write,
+};
 
-	return sprintf(buf, "%d\n", temp);
-}
+/* temperature conversion */
 
-static ssize_t status_show(struct device *dev,
-			   struct device_attribute *devattr, char *buf)
+static int tmp401_register_to_temp(u16 reg, bool extended)
 {
-	int nr = to_sensor_dev_attr_2(devattr)->nr;
-	int mask = to_sensor_dev_attr_2(devattr)->index;
-	struct tmp401_data *data = tmp401_update_device(dev);
+	int temp = reg;
 
-	if (IS_ERR(data))
-		return PTR_ERR(data);
+	if (extended)
+		temp -= 64 * 256;
 
-	return sprintf(buf, "%d\n", !!(data->status[nr] & mask));
+	return DIV_ROUND_CLOSEST(temp * 125, 32);
 }
 
-static ssize_t temp_store(struct device *dev,
-			  struct device_attribute *devattr, const char *buf,
-			  size_t count)
+static u16 tmp401_temp_to_register(long temp, bool extended, int zbits)
 {
-	int nr = to_sensor_dev_attr_2(devattr)->nr;
-	int index = to_sensor_dev_attr_2(devattr)->index;
-	struct tmp401_data *data = dev_get_drvdata(dev);
-	struct i2c_client *client = data->client;
-	long val;
-	u16 reg;
-	u8 regaddr;
-
-	if (kstrtol(buf, 10, &val))
-		return -EINVAL;
-
-	reg = tmp401_temp_to_register(val, data->config, nr == 3 ? 8 : 4);
-
-	mutex_lock(&data->update_lock);
-
-	regaddr = data->kind == tmp432 ? TMP432_TEMP_MSB_WRITE[nr][index]
-				       : TMP401_TEMP_MSB_WRITE[nr][index];
-	if (nr == 3) { /* crit is msb only */
-		i2c_smbus_write_byte_data(client, regaddr, reg >> 8);
+	if (extended) {
+		temp = clamp_val(temp, -64000, 191000);
+		temp += 64000;
 	} else {
-		/* Hardware expects big endian data --> use _swapped */
-		i2c_smbus_write_word_swapped(client, regaddr, reg);
+		temp = clamp_val(temp, 0, 127000);
 	}
-	data->temp[nr][index] = reg;
-
-	mutex_unlock(&data->update_lock);
 
-	return count;
+	return DIV_ROUND_CLOSEST(temp * (1 << (8 - zbits)), 1000) << zbits;
 }
 
-static ssize_t temp_crit_hyst_store(struct device *dev,
-				    struct device_attribute *devattr,
-				    const char *buf, size_t count)
-{
-	int temp, index = to_sensor_dev_attr(devattr)->index;
-	struct tmp401_data *data = tmp401_update_device(dev);
-	long val;
-	u8 reg;
-
-	if (IS_ERR(data))
-		return PTR_ERR(data);
-
-	if (kstrtol(buf, 10, &val))
-		return -EINVAL;
-
-	if (data->config & TMP401_CONFIG_RANGE)
-		val = clamp_val(val, -64000, 191000);
-	else
-		val = clamp_val(val, 0, 127000);
-
-	mutex_lock(&data->update_lock);
-	temp = tmp401_register_to_temp(data->temp[3][index], data->config);
-	val = clamp_val(val, temp - 255000, temp);
-	reg = ((temp - val) + 500) / 1000;
-
-	i2c_smbus_write_byte_data(data->client, TMP401_TEMP_CRIT_HYST,
-				  reg);
+/* hwmon API functions */
 
-	data->temp_crit_hyst = reg;
+static const u8 tmp401_temp_reg_index[] = {
+	[hwmon_temp_input] = 0,
+	[hwmon_temp_min] = 1,
+	[hwmon_temp_max] = 2,
+	[hwmon_temp_crit] = 3,
+	[hwmon_temp_lowest] = 4,
+	[hwmon_temp_highest] = 5,
+};
 
-	mutex_unlock(&data->update_lock);
+static const u8 tmp401_status_reg_index[] = {
+	[hwmon_temp_fault] = 0,
+	[hwmon_temp_min_alarm] = 1,
+	[hwmon_temp_max_alarm] = 2,
+	[hwmon_temp_crit_alarm] = 3,
+};
 
-	return count;
+static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val)
+{
+	struct tmp401_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
+	unsigned int regval;
+	int reg, ret;
+
+	switch (attr) {
+	case hwmon_temp_input:
+	case hwmon_temp_min:
+	case hwmon_temp_max:
+	case hwmon_temp_crit:
+	case hwmon_temp_lowest:
+	case hwmon_temp_highest:
+		reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			return ret;
+		*val = tmp401_register_to_temp(regval, data->extended_range);
+		break;
+	case hwmon_temp_crit_hyst:
+		mutex_lock(&data->update_lock);
+		reg = TMP401_TEMP_MSB[3][channel];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			goto unlock;
+		*val = tmp401_register_to_temp(regval, data->extended_range);
+		ret = regmap_read(regmap, TMP401_TEMP_CRIT_HYST, &regval);
+		if (ret < 0)
+			goto unlock;
+		*val -= regval * 1000;
+unlock:
+		mutex_unlock(&data->update_lock);
+		if (ret < 0)
+			return ret;
+		break;
+	case hwmon_temp_fault:
+	case hwmon_temp_min_alarm:
+	case hwmon_temp_max_alarm:
+	case hwmon_temp_crit_alarm:
+		reg = TMP432_STATUS_REG[tmp401_status_reg_index[attr]];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			return ret;
+		*val = !!(regval & BIT(channel));
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
 }
 
-/*
- * Resets the historical measurements of minimum and maximum temperatures.
- * This is done by writing any value to any of the minimum/maximum registers
- * (0x30-0x37).
- */
-static ssize_t reset_temp_history_store(struct device *dev,
-					struct device_attribute *devattr,
-					const char *buf, size_t count)
+static int tmp401_temp_write(struct device *dev, u32 attr, int channel,
+			     long val)
 {
 	struct tmp401_data *data = dev_get_drvdata(dev);
-	struct i2c_client *client = data->client;
-	long val;
-
-	if (kstrtol(buf, 10, &val))
-		return -EINVAL;
+	struct regmap *regmap = data->regmap;
+	unsigned int regval;
+	int reg, ret, temp;
 
-	if (val != 1) {
-		dev_err(dev,
-			"temp_reset_history value %ld not supported. Use 1 to reset the history!\n",
-			val);
-		return -EINVAL;
-	}
 	mutex_lock(&data->update_lock);
-	i2c_smbus_write_byte_data(client, TMP401_TEMP_MSB_WRITE[5][0], val);
-	data->valid = false;
+	switch (attr) {
+	case hwmon_temp_min:
+	case hwmon_temp_max:
+	case hwmon_temp_crit:
+		reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel];
+		regval = tmp401_temp_to_register(val, data->extended_range,
+						 attr == hwmon_temp_crit ? 8 : 4);
+		ret = regmap_write(regmap, reg, regval);
+		break;
+	case hwmon_temp_crit_hyst:
+		if (data->extended_range)
+			val = clamp_val(val, -64000, 191000);
+		else
+			val = clamp_val(val, 0, 127000);
+
+		reg = TMP401_TEMP_MSB[3][channel];
+		ret = regmap_read(regmap, reg, &regval);
+		if (ret < 0)
+			break;
+		temp = tmp401_register_to_temp(regval, data->extended_range);
+		val = clamp_val(val, temp - 255000, temp);
+		regval = ((temp - val) + 500) / 1000;
+		ret = regmap_write(regmap, TMP401_TEMP_CRIT_HYST, regval);
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
 	mutex_unlock(&data->update_lock);
-
-	return count;
+	return ret;
 }
 
-static ssize_t update_interval_show(struct device *dev,
-				    struct device_attribute *attr, char *buf)
+static int tmp401_chip_read(struct device *dev, u32 attr, int channel, long *val)
 {
 	struct tmp401_data *data = dev_get_drvdata(dev);
+	u32 regval;
+	int ret;
+
+	switch (attr) {
+	case hwmon_chip_update_interval:
+		ret = regmap_read(data->regmap, TMP401_CONVERSION_RATE, &regval);
+		if (ret < 0)
+			return ret;
+		*val = (1 << (7 - regval)) * 125;
+		break;
+	case hwmon_chip_temp_reset_history:
+		*val = 0;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
 
-	return sprintf(buf, "%u\n", data->update_interval);
+	return 0;
 }
 
-static ssize_t update_interval_store(struct device *dev,
-				     struct device_attribute *attr,
-				     const char *buf, size_t count)
+static int tmp401_set_convrate(struct regmap *regmap, long val)
 {
-	struct tmp401_data *data = dev_get_drvdata(dev);
-	struct i2c_client *client = data->client;
-	unsigned long val;
-	int err, rate;
-
-	err = kstrtoul(buf, 10, &val);
-	if (err)
-		return err;
+	int rate;
 
 	/*
 	 * For valid rates, interval can be calculated as
@@ -447,153 +432,137 @@ static ssize_t update_interval_store(struct device *dev,
 	 */
 	val = clamp_val(val, 125, 16000);
 	rate = 7 - __fls(val * 4 / (125 * 3));
+	return regmap_write(regmap, TMP401_CONVERSION_RATE, rate);
+}
+
+static int tmp401_chip_write(struct device *dev, u32 attr, int channel, long val)
+{
+	struct tmp401_data *data = dev_get_drvdata(dev);
+	struct regmap *regmap = data->regmap;
+	int err;
+
 	mutex_lock(&data->update_lock);
-	i2c_smbus_write_byte_data(client, TMP401_CONVERSION_RATE_WRITE, rate);
-	data->update_interval = (1 << (7 - rate)) * 125;
+	switch (attr) {
+	case hwmon_chip_update_interval:
+		err = tmp401_set_convrate(regmap, val);
+		break;
+	case hwmon_chip_temp_reset_history:
+		if (val != 1) {
+			err = -EINVAL;
+			break;
+		}
+		/*
+		 * Reset history by writing any value to any of the
+		 * minimum/maximum registers (0x30-0x37).
+		 */
+		err = regmap_write(regmap, 0x30, 0);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
 	mutex_unlock(&data->update_lock);
 
-	return count;
+	return err;
 }
 
-static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0, 0);
-static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 1, 0);
-static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 2, 0);
-static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 3, 0);
-static SENSOR_DEVICE_ATTR_RW(temp1_crit_hyst, temp_crit_hyst, 0);
-static SENSOR_DEVICE_ATTR_2_RO(temp1_min_alarm, status, 1,
-			       TMP432_STATUS_LOCAL);
-static SENSOR_DEVICE_ATTR_2_RO(temp1_max_alarm, status, 2,
-			       TMP432_STATUS_LOCAL);
-static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, status, 3,
-			       TMP432_STATUS_LOCAL);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 0, 1);
-static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 1, 1);
-static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 2, 1);
-static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 3, 1);
-static SENSOR_DEVICE_ATTR_RO(temp2_crit_hyst, temp_crit_hyst, 1);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_fault, status, 0, TMP432_STATUS_REMOTE1);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_min_alarm, status, 1,
-			       TMP432_STATUS_REMOTE1);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_max_alarm, status, 2,
-			       TMP432_STATUS_REMOTE1);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_crit_alarm, status, 3,
-			       TMP432_STATUS_REMOTE1);
-
-static DEVICE_ATTR_RW(update_interval);
-
-static struct attribute *tmp401_attributes[] = {
-	&sensor_dev_attr_temp1_input.dev_attr.attr,
-	&sensor_dev_attr_temp1_min.dev_attr.attr,
-	&sensor_dev_attr_temp1_max.dev_attr.attr,
-	&sensor_dev_attr_temp1_crit.dev_attr.attr,
-	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
-	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
-	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
-	&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
-
-	&sensor_dev_attr_temp2_input.dev_attr.attr,
-	&sensor_dev_attr_temp2_min.dev_attr.attr,
-	&sensor_dev_attr_temp2_max.dev_attr.attr,
-	&sensor_dev_attr_temp2_crit.dev_attr.attr,
-	&sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
-	&sensor_dev_attr_temp2_fault.dev_attr.attr,
-	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
-	&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
-	&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
-
-	&dev_attr_update_interval.attr,
-
-	NULL
-};
-
-static const struct attribute_group tmp401_group = {
-	.attrs = tmp401_attributes,
-};
-
-/*
- * Additional features of the TMP411 chip.
- * The TMP411 stores the minimum and maximum
- * temperature measured since power-on, chip-reset, or
- * minimum and maximum register reset for both the local
- * and remote channels.
- */
-static SENSOR_DEVICE_ATTR_2_RO(temp1_lowest, temp, 4, 0);
-static SENSOR_DEVICE_ATTR_2_RO(temp1_highest, temp, 5, 0);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_lowest, temp, 4, 1);
-static SENSOR_DEVICE_ATTR_2_RO(temp2_highest, temp, 5, 1);
-static SENSOR_DEVICE_ATTR_WO(temp_reset_history, reset_temp_history, 0);
-
-static struct attribute *tmp411_attributes[] = {
-	&sensor_dev_attr_temp1_highest.dev_attr.attr,
-	&sensor_dev_attr_temp1_lowest.dev_attr.attr,
-	&sensor_dev_attr_temp2_highest.dev_attr.attr,
-	&sensor_dev_attr_temp2_lowest.dev_attr.attr,
-	&sensor_dev_attr_temp_reset_history.dev_attr.attr,
-	NULL
-};
+static int tmp401_read(struct device *dev, enum hwmon_sensor_types type,
+		       u32 attr, int channel, long *val)
+{
+	switch (type) {
+	case hwmon_chip:
+		return tmp401_chip_read(dev, attr, channel, val);
+	case hwmon_temp:
+		return tmp401_temp_read(dev, attr, channel, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
 
-static const struct attribute_group tmp411_group = {
-	.attrs = tmp411_attributes,
-};
+static int tmp401_write(struct device *dev, enum hwmon_sensor_types type,
+			u32 attr, int channel, long val)
+{
+	switch (type) {
+	case hwmon_chip:
+		return tmp401_chip_write(dev, attr, channel, val);
+	case hwmon_temp:
+		return tmp401_temp_write(dev, attr, channel, val);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
 
-static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 0, 2);
-static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 1, 2);
-static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 2, 2);
-static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 3, 2);
-static SENSOR_DEVICE_ATTR_RO(temp3_crit_hyst, temp_crit_hyst, 2);
-static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, status, 0, TMP432_STATUS_REMOTE2);
-static SENSOR_DEVICE_ATTR_2_RO(temp3_min_alarm, status, 1,
-			       TMP432_STATUS_REMOTE2);
-static SENSOR_DEVICE_ATTR_2_RO(temp3_max_alarm, status, 2,
-			       TMP432_STATUS_REMOTE2);
-static SENSOR_DEVICE_ATTR_2_RO(temp3_crit_alarm, status, 3,
-			       TMP432_STATUS_REMOTE2);
-
-static struct attribute *tmp432_attributes[] = {
-	&sensor_dev_attr_temp3_input.dev_attr.attr,
-	&sensor_dev_attr_temp3_min.dev_attr.attr,
-	&sensor_dev_attr_temp3_max.dev_attr.attr,
-	&sensor_dev_attr_temp3_crit.dev_attr.attr,
-	&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
-	&sensor_dev_attr_temp3_fault.dev_attr.attr,
-	&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
-	&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
-	&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
-
-	NULL
-};
+static umode_t tmp401_is_visible(const void *data, enum hwmon_sensor_types type,
+				 u32 attr, int channel)
+{
+	switch (type) {
+	case hwmon_chip:
+		switch (attr) {
+		case hwmon_chip_update_interval:
+		case hwmon_chip_temp_reset_history:
+			return 0644;
+		default:
+			break;
+		}
+		break;
+	case hwmon_temp:
+		switch (attr) {
+		case hwmon_temp_input:
+		case hwmon_temp_min_alarm:
+		case hwmon_temp_max_alarm:
+		case hwmon_temp_crit_alarm:
+		case hwmon_temp_fault:
+		case hwmon_temp_lowest:
+		case hwmon_temp_highest:
+			return 0444;
+		case hwmon_temp_min:
+		case hwmon_temp_max:
+		case hwmon_temp_crit:
+		case hwmon_temp_crit_hyst:
+			return 0644;
+		default:
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
 
-static const struct attribute_group tmp432_group = {
-	.attrs = tmp432_attributes,
+static const struct hwmon_ops tmp401_ops = {
+	.is_visible = tmp401_is_visible,
+	.read = tmp401_read,
+	.write = tmp401_write,
 };
 
-/*
- * Begin non sysfs callback code (aka Real code)
- */
+/* chip initialization, detect, probe */
 
-static int tmp401_init_client(struct tmp401_data *data,
-			      struct i2c_client *client)
+static int tmp401_init_client(struct tmp401_data *data)
 {
-	int config, config_orig, status = 0;
+	struct regmap *regmap = data->regmap;
+	u32 config, config_orig;
+	int ret;
 
-	/* Set the conversion rate to 2 Hz */
-	i2c_smbus_write_byte_data(client, TMP401_CONVERSION_RATE_WRITE, 5);
-	data->update_interval = 500;
+	/* Set conversion rate to 2 Hz */
+	ret = regmap_write(regmap, TMP401_CONVERSION_RATE, 5);
+	if (ret < 0)
+		return ret;
 
 	/* Start conversions (disable shutdown if necessary) */
-	config = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
-	if (config < 0)
-		return config;
+	ret = regmap_read(regmap, TMP401_CONFIG, &config);
+	if (ret < 0)
+		return ret;
 
 	config_orig = config;
 	config &= ~TMP401_CONFIG_SHUTDOWN;
 
+	data->extended_range = !!(config & TMP401_CONFIG_RANGE);
+
 	if (config != config_orig)
-		status = i2c_smbus_write_byte_data(client,
-						   TMP401_CONFIG_WRITE,
-						   config);
+		ret = regmap_write(regmap, TMP401_CONFIG, config);
 
-	return status;
+	return ret;
 }
 
 static int tmp401_detect(struct i2c_client *client,
@@ -651,11 +620,11 @@ static int tmp401_detect(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
+	reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG);
 	if (reg & 0x1b)
 		return -ENODEV;
 
-	reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE_READ);
+	reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE);
 	/* Datasheet says: 0x1-0x6 */
 	if (reg > 15)
 		return -ENODEV;
@@ -671,9 +640,10 @@ static int tmp401_probe(struct i2c_client *client)
 		"TMP401", "TMP411", "TMP431", "TMP432", "TMP435"
 	};
 	struct device *dev = &client->dev;
+	struct hwmon_channel_info *info;
 	struct device *hwmon_dev;
 	struct tmp401_data *data;
-	int groups = 0, status;
+	int status;
 
 	data = devm_kzalloc(dev, sizeof(struct tmp401_data), GFP_KERNEL);
 	if (!data)
@@ -683,24 +653,53 @@ static int tmp401_probe(struct i2c_client *client)
 	mutex_init(&data->update_lock);
 	data->kind = i2c_match_id(tmp401_id, client)->driver_data;
 
-	/* Initialize the TMP401 chip */
-	status = tmp401_init_client(data, client);
-	if (status < 0)
-		return status;
+	data->regmap = devm_regmap_init(dev, NULL, data, &tmp401_regmap_config);
+	if (IS_ERR(data->regmap))
+		return PTR_ERR(data->regmap);
 
-	/* Register sysfs hooks */
-	data->groups[groups++] = &tmp401_group;
+	/* initialize configuration data */
+	data->chip.ops = &tmp401_ops;
+	data->chip.info = data->info;
 
-	/* Register additional tmp411 sysfs hooks */
-	if (data->kind == tmp411)
-		data->groups[groups++] = &tmp411_group;
+	data->info[0] = &data->chip_info;
+	data->info[1] = &data->temp_info;
 
-	/* Register additional tmp432 sysfs hooks */
-	if (data->kind == tmp432)
-		data->groups[groups++] = &tmp432_group;
+	info = &data->chip_info;
+	info->type = hwmon_chip;
+	info->config = data->chip_channel_config;
+
+	data->chip_channel_config[0] = HWMON_C_UPDATE_INTERVAL;
+
+	info = &data->temp_info;
+	info->type = hwmon_temp;
+	info->config = data->temp_channel_config;
+
+	data->temp_channel_config[0] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+		HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+		HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM;
+	data->temp_channel_config[1] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+		HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+		HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT;
+
+	if (data->kind == tmp411) {
+		data->temp_channel_config[0] |= HWMON_T_HIGHEST | HWMON_T_LOWEST;
+		data->temp_channel_config[1] |= HWMON_T_HIGHEST | HWMON_T_LOWEST;
+		data->chip_channel_config[0] |= HWMON_C_TEMP_RESET_HISTORY;
+	}
+
+	if (data->kind == tmp432) {
+		data->temp_channel_config[2] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+			HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+			HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT;
+	}
+
+	/* Initialize the TMP401 chip */
+	status = tmp401_init_client(data);
+	if (status < 0)
+		return status;
 
-	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
-							   data, data->groups);
+	hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,
+							 &data->chip, NULL);
 	if (IS_ERR(hwmon_dev))
 		return PTR_ERR(hwmon_dev);
 

drivers/hwmon/xgene-hwmon.c

@@ -659,8 +659,10 @@ static int xgene_hwmon_probe(struct platform_device *pdev)
 
 		acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table,
 					    &pdev->dev);
-		if (!acpi_id)
-			return -EINVAL;
+		if (!acpi_id) {
+			rc = -EINVAL;
+			goto out_mbox_free;
+		}
 
 		version = (int)acpi_id->driver_data;
 

include/linux/hwmon.h

@@ -403,7 +403,7 @@ struct hwmon_ops {
 };
 
 /**
- * Channel information
+ * struct hwmon_channel_info - Channel information
  * @type:	Channel type.
  * @config:	Pointer to NULL-terminated list of channel parameters.
  *		Use for per-channel attributes.
@@ -422,7 +422,7 @@ struct hwmon_channel_info {
 	})
 
 /**
- * Chip configuration
+ * struct hwmon_chip_info - Chip configuration
  * @ops:	Pointer to hwmon operations.
  * @info:	Null-terminated list of channel information.
  */

include/linux/pci_ids.h

@@ -555,6 +555,7 @@
 #define PCI_DEVICE_ID_AMD_17H_M60H_DF_F3 0x144b
 #define PCI_DEVICE_ID_AMD_17H_M70H_DF_F3 0x1443
 #define PCI_DEVICE_ID_AMD_19H_DF_F3	0x1653
+#define PCI_DEVICE_ID_AMD_19H_M10H_DF_F3 0x14b0
 #define PCI_DEVICE_ID_AMD_19H_M40H_DF_F3 0x167c
 #define PCI_DEVICE_ID_AMD_19H_M50H_DF_F3 0x166d
 #define PCI_DEVICE_ID_AMD_CNB17H_F3	0x1703

include/linux/platform_data/ntc_thermistor.h

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * ntc_thermistor.h - NTC Thermistors
- *
- *  Copyright (C) 2010 Samsung Electronics
- *  MyungJoo Ham <myungjoo.ham@samsung.com>
- */
-#ifndef _LINUX_NTC_H
-#define _LINUX_NTC_H
-
-struct iio_channel;
-
-enum ntc_thermistor_type {
-	TYPE_B57330V2103,
-	TYPE_B57891S0103,
-	TYPE_NCPXXWB473,
-	TYPE_NCPXXWF104,
-	TYPE_NCPXXWL333,
-	TYPE_NCPXXXH103,
-};
-
-struct ntc_thermistor_platform_data {
-	/*
-	 * One (not both) of read_uV and read_ohm should be provided and only
-	 * one of the two should be provided.
-	 * Both functions should return negative value for an error case.
-	 *
-	 * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use
-	 * read_uV()
-	 *
-	 * How to setup pullup_ohm, pulldown_ohm, and connect is
-	 * described at Documentation/hwmon/ntc_thermistor.rst
-	 *
-	 * pullup/down_ohm: 0 for infinite / not-connected
-	 *
-	 * chan: iio_channel pointer to communicate with the ADC which the
-	 * thermistor is using for conversion of the analog values.
-	 */
-	int (*read_uv)(struct ntc_thermistor_platform_data *);
-	unsigned int pullup_uv;
-
-	unsigned int pullup_ohm;
-	unsigned int pulldown_ohm;
-	enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect;
-	struct iio_channel *chan;
-
-	int (*read_ohm)(void);
-};
-
-#endif /* _LINUX_NTC_H */