This patch series adds support for Ampere SMpro hwmon driver. This driver supports accessing various CPU sensors provided by the SMpro co-processor including temperature, power, voltages, and current found on Ampere Altra processor family. The SMpro co-processor on Ampere Altra processor family is to monitor and report various data included hwmon-related info, RAS errors, and other miscellaneous information. The SMPro MFD driver intializes the register map and instantiates all sub-devices. All the specifics will be handled in the child drivers. v5: + Introduced the smpro-mfd driver and drop the use of simple-mfd-i2c driver to avoid DT node with no resource in child device DT nodes [Rob] + Removed the use of reg DT property in child driver [Quan] + Validated ManufactureID when probing smpro-mfd drivers [Quan] + As child devices are instantiated by SMPro MFD driver, drop the ManufacturerID checking in child driver, ie: smpro-hwmon [Quan] + Revised commit messages [Quan] v4: + Revised commit message [Quan] + Fixed build issue found by kernel test robot [Guenter] + Returned regmap_read() error code [Guenter] v3: + Supported list of compatible string [Rob] + Introduced reg property in DT to specify reg offset [Rob] + Updated description and other minor changes in yaml file [Rob] + Handled negative temperature value [Guenter] + Returned -ENODEV if Manufacturer ID is wrong [Guenter] + Refactored smpro_read_string() and smpro_temp_read() [Guenter] + Removed smpro_write() function [Guenter] + Added minor refactor changes [Quan] v2: + Used 'struct of_device_id's .data attribute [Lee Jones] + Removed "virtual" sensors [Guenter] + Fixed typo "mili" to "milli", "nanoWatt" to "microWatt" [Guenter] + Reported SOC_TDP as "Socket TDP" using max attributes [Guenter] + Clarified "highest" meaning in documentation [Guenter] + Corrected return error code when host is turn off [Guenter] + Reported MEM HOT Threshold for all DIMMs as temp*_crit [Guenter] + Removed license info as SPDX-License-Identifier existed [Guenter] + Added is_visible() support [Guenter] + Used HWMON_CHANNEL_INFO() macro and LABEL attributes [Guenter] + Made is_valid_id() return boolean [Guenter] + Returned -EPROBE_DEFER when smpro reg inaccessible [Guenter] + Removed unnecessary error message when dev register fail [Guenter] + Removed Socket TDP sensor [Quan] + Changed "ampere,ac01-smpro" to "ampere,smpro" [Quan] + Included sensor type and channel in labels [Quan] + Refactorized code to fix checkpatch.pl --strict complaint [Quan] Quan Nguyen (4): dt-bindings: mfd: Add bindings for Ampere Altra SMPro MFD driver mfd: smpro-mfd: Adds Ampere's Altra SMpro MFD driver hwmon: smpro: Add Ampere's Altra smpro-hwmon driver docs: hwmon: (smpro-hwmon) Add documentation .../devicetree/bindings/mfd/ampere,smpro.yaml | 52 ++ Documentation/hwmon/index.rst | 1 + Documentation/hwmon/smpro-hwmon.rst | 101 ++++ drivers/hwmon/Kconfig | 8 + drivers/hwmon/Makefile | 1 + drivers/hwmon/smpro-hwmon.c | 463 ++++++++++++++++++ drivers/mfd/Kconfig | 12 + drivers/mfd/Makefile | 1 + drivers/mfd/smpro-mfd.c | 74 +++ 9 files changed, 713 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/ampere,smpro.yaml create mode 100644 Documentation/hwmon/smpro-hwmon.rst create mode 100644 drivers/hwmon/smpro-hwmon.c create mode 100644 drivers/mfd/smpro-mfd.c -- 2.28.0
