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| author | Duncan Laurie <dlaurie@google.com> | 2018-11-20 17:22:24 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-12-04 10:19:57 +0000 |
| commit | 84227611d5c06d1482097df6f954b03fa3043a74 (patch) | |
| tree | 664af0cbbecb774283bb1a5a8fe23a530521a50f | |
| parent | b94c867bb1dfcb0ec511e1cbe1f9bd5186e81385 (diff) | |
| download | coreboot-84227611d5c06d1482097df6f954b03fa3043a74.tar.xz | |
soc/intel/common/dptf: Add method for temp conversion
Add a method to convert from 1/10 Kelvin to Celsius. This
is useful for EC devices where the sensor temperature are
stored in Celsius instead of Kelvin.
Change-Id: I6b1154f5ba13416131a029966d6d5c1598904881
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/29758
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/intel/common/acpi/dptf/dptf.asl | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/soc/intel/common/acpi/dptf/dptf.asl b/src/soc/intel/common/acpi/dptf/dptf.asl index beb41e2dea..1dd57c04dc 100644 --- a/src/soc/intel/common/acpi/dptf/dptf.asl +++ b/src/soc/intel/common/acpi/dptf/dptf.asl @@ -95,6 +95,21 @@ Device (DPTF) Return (Local0) } + /* Convert from 1/10 Kelvin to Degrees C for ACPI */ + Method (KTOC, 1) { + If (LLessEqual (Arg0, 2732)) { + Return (0) + } + + /* Convert to Celsius */ + Subtract (Arg0, 2732, Local0) + + /* Convert from 10th of degrees */ + Divide (Local0, 10,, Local0) + + Return (Local0) + } + /* Include Thermal Participants */ #include "thermal.asl" |