[v2,0/1] platform/x86: Introduce dasharo-acpi platform driver

Message

Michał Kopeć March 28, 2025, 2:01 p.m. UTC

Introduce a driver for devices running Dasharo firmware. The driver
supports thermal monitoring using a new ACPI interface in Dasharo. The
initial version supports monitoring fan speeds, fan PWM duty cycles and
system temperatures as well as determining which specific interfaces are
implemented by firmware.

It has been tested on a NovaCustom laptop running pre-release Dasharo
firmware, which implements fan and thermal monitoring for the CPU and
the discrete GPU, if present.

Changes in v2:
- Remove redundant copyright information
- Turn dasharo_fill_* functions into single dasharo_fill_feature_caps
  function
- Code style fixes
- Turn large if / else blocks into switch / case
- Fix possible positive return values in hwmon read handler
- Change while loops to for loops
- Add local variable for data->sensors[data->sensors_count] in
  dasharo_fill_feature_caps
- Replace snprintf with scnprintf per Ilpo's review
- Keep the "ok" path silent

Changes in V3:
- Simplify dasharo_read_value_by_cap_idx arguments and rename to
  dasharo_read_channel

Michał Kopeć (1):
  platform/x86: Introduce dasharo-acpi platform driver

 drivers/platform/x86/Kconfig        |  10 +
 drivers/platform/x86/Makefile       |   3 +
 drivers/platform/x86/dasharo-acpi.c | 375 ++++++++++++++++++++++++++++
 3 files changed, 388 insertions(+)
 create mode 100644 drivers/platform/x86/dasharo-acpi.c