Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-21 19:41:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

Documentation: alienware-wmi: Describe THERMAL_INFORMATION operation 0x02

Browse Source 
This operation is used by alienware-wmi driver to avoid brute-forcing
operation 0x03.

Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20241111183639.14726-1-kuurtb@gmail.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Kurt Borja 2024-11-11 15:36:39 -03:00 committed by Ilpo Järvinen
parent bfcda5cbcd
commit 6674c5a0ee
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 11 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/wmi/devices/alienware-wmi.rst
View File

@ -96,7 +96,7 @@ WMI method Thermal_Information([in] uint32 arg2, [out] uint32 argr)
argr = 1
if BYTE_0(arg2) == 0x02:
argr = UNKNOWN_CONSTANT
argr = SYSTEM_DESCRIPTION
if BYTE_0(arg2) == 0x03:
if BYTE_1(arg2) == 0x00:
@ -179,6 +179,16 @@ WMI method Thermal_Information([in] uint32 arg2, [out] uint32 argr)
else:
argr = 0xFFFFFFFF
Operation 0x02 returns a *system description* buffer with the following
structure:
::
out[0] -> Number of fans
out[1] -> Number of sensors
out[2] -> 0x00
out[3] -> Number of thermal modes
Operation 0x03 list all available fan IDs, sensor IDs and thermal profile
codes in order, but different models may have different number of fans and
thermal profiles. These are the known ranges: